diff --git a/examples/kube_resource/complex/muti_models/models/core_oam_dev_v1alpha2_containerized_workload.k b/examples/kube_resource/complex/muti_models/models/core_oam_dev_v1alpha2_containerized_workload.k
index 01133a7..cffa465 100644
--- a/examples/kube_resource/complex/muti_models/models/core_oam_dev_v1alpha2_containerized_workload.k
+++ b/examples/kube_resource/complex/muti_models/models/core_oam_dev_v1alpha2_containerized_workload.k
@@ -4,7 +4,7 @@ Editing this file might prove futile when you re-run the KCL auto-gen generate c
 """
 import regex
 import k8s.apimachinery.pkg.apis.meta.v1
-regex_match = regex.match
+_regex_match = regex.match
 
 
 schema ContainerizedWorkload:
@@ -150,7 +150,7 @@ schema CoreOamDevV1alpha2ContainerizedWorkloadSpecContainersItems0EnvItems0:
 
 
     check:
-        regex_match(str(name), r"^[-_a-zA-Z0-9]+$")
+        _regex_match(str(name), r"^[-_a-zA-Z0-9]+$")
 
 
 schema CoreOamDevV1alpha2ContainerizedWorkloadSpecContainersItems0LivenessProbe:
@@ -286,7 +286,7 @@ schema CoreOamDevV1alpha2ContainerizedWorkloadSpecContainersItems0PortsItems0:
 
 
     check:
-        regex_match(str(name), r"^[a-z]+$")
+        _regex_match(str(name), r"^[a-z]+$")
 
 
 schema CoreOamDevV1alpha2ContainerizedWorkloadSpecContainersItems0ReadiessProbe:
diff --git a/pkg/kube_resource/generator/testdata/all_of_pattern/models/karpenter_k8s_aws_v1beta1_e_c2_node_class.k b/pkg/kube_resource/generator/testdata/all_of_pattern/models/karpenter_k8s_aws_v1beta1_e_c2_node_class.k
index ac894d1..6d59a88 100644
--- a/pkg/kube_resource/generator/testdata/all_of_pattern/models/karpenter_k8s_aws_v1beta1_e_c2_node_class.k
+++ b/pkg/kube_resource/generator/testdata/all_of_pattern/models/karpenter_k8s_aws_v1beta1_e_c2_node_class.k
@@ -4,7 +4,7 @@ Editing this file might prove futile when you re-run the KCL auto-gen generate c
 """
 import regex
 import k8s.apimachinery.pkg.apis.meta.v1
-regex_match = regex.match
+_regex_match = regex.match
 
 
 schema EC2NodeClass:
@@ -125,7 +125,7 @@ schema KarpenterK8sAwsV1beta1EC2NodeClassSpecAmiSelectorTermsItems0:
 
 
     check:
-        regex_match(str(id), r"ami-[0-9a-z]+") if id
+        _regex_match(str(id), r"ami-[0-9a-z]+") if id
 
 
 schema KarpenterK8sAwsV1beta1EC2NodeClassSpecBlockDeviceMappingsItems0:
@@ -203,8 +203,8 @@ schema KarpenterK8sAwsV1beta1EC2NodeClassSpecBlockDeviceMappingsItems0Ebs:
 
 
     check:
-        regex_match(str(volumeSize), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if volumeSize
-        regex_match(str(volumeSize), r"^((?:[1-9][0-9]{0,3}|[1-4][0-9]{4}|[5][0-8][0-9]{3}|59000)Gi|(?:[1-9][0-9]{0,3}|[1-5][0-9]{4}|[6][0-3][0-9]{3}|64000)G|([1-9]||[1-5][0-7]|58)Ti|([1-9]||[1-5][0-9]|6[0-3]|64)T)$") if volumeSize
+        _regex_match(str(volumeSize), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if volumeSize
+        _regex_match(str(volumeSize), r"^((?:[1-9][0-9]{0,3}|[1-4][0-9]{4}|[5][0-8][0-9]{3}|59000)Gi|(?:[1-9][0-9]{0,3}|[1-5][0-9]{4}|[6][0-3][0-9]{3}|64000)G|([1-9]||[1-5][0-7]|58)Ti|([1-9]||[1-5][0-9]|6[0-3]|64)T)$") if volumeSize
 
 
 schema KarpenterK8sAwsV1beta1EC2NodeClassSpecMetadataOptions:
@@ -266,7 +266,7 @@ schema KarpenterK8sAwsV1beta1EC2NodeClassSpecSecurityGroupSelectorTermsItems0:
 
 
     check:
-        regex_match(str(id), r"sg-[0-9a-z]+") if id
+        _regex_match(str(id), r"sg-[0-9a-z]+") if id
 
 
 schema KarpenterK8sAwsV1beta1EC2NodeClassSpecSubnetSelectorTermsItems0:
@@ -288,7 +288,7 @@ schema KarpenterK8sAwsV1beta1EC2NodeClassSpecSubnetSelectorTermsItems0:
 
 
     check:
-        regex_match(str(id), r"subnet-[0-9a-z]+") if id
+        _regex_match(str(id), r"subnet-[0-9a-z]+") if id
 
 
 schema KarpenterK8sAwsV1beta1EC2NodeClassStatus:
diff --git a/pkg/kube_resource/generator/testdata/array_branch/models/operator_victoriametrics_com_v1beta1_vm_agent.k b/pkg/kube_resource/generator/testdata/array_branch/models/operator_victoriametrics_com_v1beta1_vm_agent.k
index 6e0d8b2..6291771 100644
--- a/pkg/kube_resource/generator/testdata/array_branch/models/operator_victoriametrics_com_v1beta1_vm_agent.k
+++ b/pkg/kube_resource/generator/testdata/array_branch/models/operator_victoriametrics_com_v1beta1_vm_agent.k
@@ -4,7 +4,7 @@ Editing this file might prove futile when you re-run the KCL auto-gen generate c
 """
 import regex
 import k8s.apimachinery.pkg.apis.meta.v1
-regex_match = regex.match
+_regex_match = regex.match
 
 
 schema VMAgent:
@@ -372,8 +372,8 @@ schema OperatorVictoriametricsComV1beta1VMAgentSpec:
 
 
     check:
-        regex_match(str(scrapeInterval), r"[0-9]+(ms|s|m|h)") if scrapeInterval
-        regex_match(str(scrapeTimeout), r"[0-9]+(ms|s|m|h)") if scrapeTimeout
+        _regex_match(str(scrapeInterval), r"[0-9]+(ms|s|m|h)") if scrapeInterval
+        _regex_match(str(scrapeTimeout), r"[0-9]+(ms|s|m|h)") if scrapeTimeout
 
 
 schema OperatorVictoriametricsComV1beta1VMAgentSpecAPIServerConfig:
@@ -879,8 +879,8 @@ schema OperatorVictoriametricsComV1beta1VMAgentSpecClaimTemplatesItems0SpecResou
 
 
     check:
-        all _, limits in limits {regex_match(str(limits), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if limits } if limits
-        all _, requests in requests {regex_match(str(requests), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if requests } if requests
+        all _, limits in limits {_regex_match(str(limits), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if limits } if limits
+        all _, requests in requests {_regex_match(str(requests), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if requests } if requests
 
 
 schema OperatorVictoriametricsComV1beta1VMAgentSpecClaimTemplatesItems0SpecSelector:
@@ -958,8 +958,8 @@ schema OperatorVictoriametricsComV1beta1VMAgentSpecClaimTemplatesItems0Status:
 
 
     check:
-        all _, allocatedResources in allocatedResources {regex_match(str(allocatedResources), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if allocatedResources } if allocatedResources
-        all _, capacity in capacity {regex_match(str(capacity), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if capacity } if capacity
+        all _, allocatedResources in allocatedResources {_regex_match(str(allocatedResources), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if allocatedResources } if allocatedResources
+        all _, capacity in capacity {_regex_match(str(capacity), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if capacity } if capacity
 
 
 schema OperatorVictoriametricsComV1beta1VMAgentSpecClaimTemplatesItems0StatusConditionsItems0:
@@ -1737,7 +1737,7 @@ schema OperatorVictoriametricsComV1beta1VMAgentSpecRemoteWriteItems0:
 
 
     check:
-        regex_match(str(sendTimeout), r"[0-9]+(ms|s|m|h)") if sendTimeout
+        _regex_match(str(sendTimeout), r"[0-9]+(ms|s|m|h)") if sendTimeout
 
 
 schema OperatorVictoriametricsComV1beta1VMAgentSpecRemoteWriteItems0BasicAuth:
@@ -2454,7 +2454,7 @@ schema OperatorVictoriametricsComV1beta1VMAgentSpecRemoteWriteSettings:
 
 
     check:
-        regex_match(str(flushInterval), r"[0-9]+(ms|s|m|h)") if flushInterval
+        _regex_match(str(flushInterval), r"[0-9]+(ms|s|m|h)") if flushInterval
 
 
 schema OperatorVictoriametricsComV1beta1VMAgentSpecResources:
@@ -2476,8 +2476,8 @@ schema OperatorVictoriametricsComV1beta1VMAgentSpecResources:
 
 
     check:
-        all _, limits in limits {regex_match(str(limits), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if limits } if limits
-        all _, requests in requests {regex_match(str(requests), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if requests } if requests
+        all _, limits in limits {_regex_match(str(limits), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if limits } if limits
+        all _, requests in requests {_regex_match(str(requests), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if requests } if requests
 
 
 schema OperatorVictoriametricsComV1beta1VMAgentSpecRollingUpdate:
@@ -2717,7 +2717,7 @@ schema OperatorVictoriametricsComV1beta1VMAgentSpecStatefulStorageEmptyDir:
 
 
     check:
-        regex_match(str(sizeLimit), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if sizeLimit
+        _regex_match(str(sizeLimit), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if sizeLimit
 
 
 schema OperatorVictoriametricsComV1beta1VMAgentSpecStatefulStorageVolumeClaimTemplate:
@@ -2877,8 +2877,8 @@ schema OperatorVictoriametricsComV1beta1VMAgentSpecStatefulStorageVolumeClaimTem
 
 
     check:
-        all _, limits in limits {regex_match(str(limits), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if limits } if limits
-        all _, requests in requests {regex_match(str(requests), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if requests } if requests
+        all _, limits in limits {_regex_match(str(limits), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if limits } if limits
+        all _, requests in requests {_regex_match(str(requests), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if requests } if requests
 
 
 schema OperatorVictoriametricsComV1beta1VMAgentSpecStatefulStorageVolumeClaimTemplateSpecSelector:
@@ -2956,8 +2956,8 @@ schema OperatorVictoriametricsComV1beta1VMAgentSpecStatefulStorageVolumeClaimTem
 
 
     check:
-        all _, allocatedResources in allocatedResources {regex_match(str(allocatedResources), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if allocatedResources } if allocatedResources
-        all _, capacity in capacity {regex_match(str(capacity), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if capacity } if capacity
+        all _, allocatedResources in allocatedResources {_regex_match(str(allocatedResources), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if allocatedResources } if allocatedResources
+        all _, capacity in capacity {_regex_match(str(capacity), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if capacity } if capacity
 
 
 schema OperatorVictoriametricsComV1beta1VMAgentSpecStatefulStorageVolumeClaimTemplateStatusConditionsItems0:
diff --git a/pkg/kube_resource/generator/testdata/int_or_string_validation/models/crd_projectcalico_org_v1_global_network_policy.k b/pkg/kube_resource/generator/testdata/int_or_string_validation/models/crd_projectcalico_org_v1_global_network_policy.k
index acb5ace..4513423 100644
--- a/pkg/kube_resource/generator/testdata/int_or_string_validation/models/crd_projectcalico_org_v1_global_network_policy.k
+++ b/pkg/kube_resource/generator/testdata/int_or_string_validation/models/crd_projectcalico_org_v1_global_network_policy.k
@@ -4,7 +4,7 @@ Editing this file might prove futile when you re-run the KCL auto-gen generate c
 """
 import regex
 import k8s.apimachinery.pkg.apis.meta.v1
-regex_match = regex.match
+_regex_match = regex.match
 
 
 schema GlobalNetworkPolicy:
@@ -42,7 +42,7 @@ schema GlobalNetworkPolicy:
 
 
     check:
-        all _, capacity in capacity {regex_match(str(capacity), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if capacity } if capacity
+        all _, capacity in capacity {_regex_match(str(capacity), r"^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$") if capacity } if capacity
 
 
 schema CrdProjectcalicoOrgV1GlobalNetworkPolicyDestination:
@@ -100,8 +100,8 @@ schema CrdProjectcalicoOrgV1GlobalNetworkPolicyDestination:
 
 
     check:
-        all notPorts in notPorts {regex_match(str(notPorts), r"^.*") if notPorts } if notPorts
-        all ports in ports {regex_match(str(ports), r"^.*") if ports } if ports
+        all notPorts in notPorts {_regex_match(str(notPorts), r"^.*") if notPorts } if notPorts
+        all ports in ports {_regex_match(str(ports), r"^.*") if ports } if ports
 
 
 schema CrdProjectcalicoOrgV1GlobalNetworkPolicyDestinationServiceAccounts:
diff --git a/pkg/kube_resource/generator/testdata/map_default_value/models/acid_zalan_do_v1_operator_configuration.k b/pkg/kube_resource/generator/testdata/map_default_value/models/acid_zalan_do_v1_operator_configuration.k
index 9679439..edbc842 100644
--- a/pkg/kube_resource/generator/testdata/map_default_value/models/acid_zalan_do_v1_operator_configuration.k
+++ b/pkg/kube_resource/generator/testdata/map_default_value/models/acid_zalan_do_v1_operator_configuration.k
@@ -4,7 +4,7 @@ Editing this file might prove futile when you re-run the KCL auto-gen generate c
 """
 import regex
 import k8s.apimachinery.pkg.apis.meta.v1
-regex_match = regex.match
+_regex_match = regex.match
 
 
 schema OperatorConfiguration:
@@ -294,10 +294,10 @@ schema AcidZalanDoV1OperatorConfigurationConfigurationConnectionPooler:
 
 
     check:
-        regex_match(str(connection_pooler_default_cpu_limit), r"^(\d+m|\d+(\.\d{1,3})?)$") if connection_pooler_default_cpu_limit
-        regex_match(str(connection_pooler_default_cpu_request), r"^(\d+m|\d+(\.\d{1,3})?)$") if connection_pooler_default_cpu_request
-        regex_match(str(connection_pooler_default_memory_limit), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if connection_pooler_default_memory_limit
-        regex_match(str(connection_pooler_default_memory_request), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if connection_pooler_default_memory_request
+        _regex_match(str(connection_pooler_default_cpu_limit), r"^(\d+m|\d+(\.\d{1,3})?)$") if connection_pooler_default_cpu_limit
+        _regex_match(str(connection_pooler_default_cpu_request), r"^(\d+m|\d+(\.\d{1,3})?)$") if connection_pooler_default_cpu_request
+        _regex_match(str(connection_pooler_default_memory_limit), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if connection_pooler_default_memory_limit
+        _regex_match(str(connection_pooler_default_memory_request), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if connection_pooler_default_memory_request
         connection_pooler_number_of_instances >= 1 if connection_pooler_number_of_instances not in [None, Undefined]
 
 
@@ -714,11 +714,11 @@ schema AcidZalanDoV1OperatorConfigurationConfigurationLogicalBackup:
 
 
     check:
-        regex_match(str(logical_backup_cpu_limit), r"^(\d+m|\d+(\.\d{1,3})?)$") if logical_backup_cpu_limit
-        regex_match(str(logical_backup_cpu_request), r"^(\d+m|\d+(\.\d{1,3})?)$") if logical_backup_cpu_request
-        regex_match(str(logical_backup_memory_limit), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if logical_backup_memory_limit
-        regex_match(str(logical_backup_memory_request), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if logical_backup_memory_request
-        regex_match(str(logical_backup_schedule), r"^(\d+|\*)(/\d+)?(\s+(\d+|\*)(/\d+)?){4}$") if logical_backup_schedule
+        _regex_match(str(logical_backup_cpu_limit), r"^(\d+m|\d+(\.\d{1,3})?)$") if logical_backup_cpu_limit
+        _regex_match(str(logical_backup_cpu_request), r"^(\d+m|\d+(\.\d{1,3})?)$") if logical_backup_cpu_request
+        _regex_match(str(logical_backup_memory_limit), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if logical_backup_memory_limit
+        _regex_match(str(logical_backup_memory_request), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if logical_backup_memory_request
+        _regex_match(str(logical_backup_schedule), r"^(\d+|\*)(/\d+)?(\s+(\d+|\*)(/\d+)?){4}$") if logical_backup_schedule
 
 
 schema AcidZalanDoV1OperatorConfigurationConfigurationMajorVersionUpgrade:
@@ -804,14 +804,14 @@ schema AcidZalanDoV1OperatorConfigurationConfigurationPostgresPodResources:
 
 
     check:
-        regex_match(str(default_cpu_limit), r"^(\d+m|\d+(\.\d{1,3})?)$") if default_cpu_limit
-        regex_match(str(default_cpu_request), r"^(\d+m|\d+(\.\d{1,3})?)$") if default_cpu_request
-        regex_match(str(default_memory_limit), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if default_memory_limit
-        regex_match(str(default_memory_request), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if default_memory_request
-        regex_match(str(max_cpu_request), r"^(\d+m|\d+(\.\d{1,3})?)$") if max_cpu_request
-        regex_match(str(max_memory_request), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if max_memory_request
-        regex_match(str(min_cpu_limit), r"^(\d+m|\d+(\.\d{1,3})?)$") if min_cpu_limit
-        regex_match(str(min_memory_limit), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if min_memory_limit
+        _regex_match(str(default_cpu_limit), r"^(\d+m|\d+(\.\d{1,3})?)$") if default_cpu_limit
+        _regex_match(str(default_cpu_request), r"^(\d+m|\d+(\.\d{1,3})?)$") if default_cpu_request
+        _regex_match(str(default_memory_limit), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if default_memory_limit
+        _regex_match(str(default_memory_request), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if default_memory_request
+        _regex_match(str(max_cpu_request), r"^(\d+m|\d+(\.\d{1,3})?)$") if max_cpu_request
+        _regex_match(str(max_memory_request), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if max_memory_request
+        _regex_match(str(min_cpu_limit), r"^(\d+m|\d+(\.\d{1,3})?)$") if min_cpu_limit
+        _regex_match(str(min_memory_limit), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if min_memory_limit
 
 
 schema AcidZalanDoV1OperatorConfigurationConfigurationScalyr:
@@ -853,10 +853,10 @@ schema AcidZalanDoV1OperatorConfigurationConfigurationScalyr:
 
 
     check:
-        regex_match(str(scalyr_cpu_limit), r"^(\d+m|\d+(\.\d{1,3})?)$") if scalyr_cpu_limit
-        regex_match(str(scalyr_cpu_request), r"^(\d+m|\d+(\.\d{1,3})?)$") if scalyr_cpu_request
-        regex_match(str(scalyr_memory_limit), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if scalyr_memory_limit
-        regex_match(str(scalyr_memory_request), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if scalyr_memory_request
+        _regex_match(str(scalyr_cpu_limit), r"^(\d+m|\d+(\.\d{1,3})?)$") if scalyr_cpu_limit
+        _regex_match(str(scalyr_cpu_request), r"^(\d+m|\d+(\.\d{1,3})?)$") if scalyr_cpu_request
+        _regex_match(str(scalyr_memory_limit), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if scalyr_memory_limit
+        _regex_match(str(scalyr_memory_request), r"^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$") if scalyr_memory_request
 
 
 schema AcidZalanDoV1OperatorConfigurationConfigurationTeamsAPI:
diff --git a/pkg/kube_resource/generator/testdata/muti_models/models/core_oam_dev_v1alpha2_containerized_workload.k b/pkg/kube_resource/generator/testdata/muti_models/models/core_oam_dev_v1alpha2_containerized_workload.k
index 01133a7..cffa465 100644
--- a/pkg/kube_resource/generator/testdata/muti_models/models/core_oam_dev_v1alpha2_containerized_workload.k
+++ b/pkg/kube_resource/generator/testdata/muti_models/models/core_oam_dev_v1alpha2_containerized_workload.k
@@ -4,7 +4,7 @@ Editing this file might prove futile when you re-run the KCL auto-gen generate c
 """
 import regex
 import k8s.apimachinery.pkg.apis.meta.v1
-regex_match = regex.match
+_regex_match = regex.match
 
 
 schema ContainerizedWorkload:
@@ -150,7 +150,7 @@ schema CoreOamDevV1alpha2ContainerizedWorkloadSpecContainersItems0EnvItems0:
 
 
     check:
-        regex_match(str(name), r"^[-_a-zA-Z0-9]+$")
+        _regex_match(str(name), r"^[-_a-zA-Z0-9]+$")
 
 
 schema CoreOamDevV1alpha2ContainerizedWorkloadSpecContainersItems0LivenessProbe:
@@ -286,7 +286,7 @@ schema CoreOamDevV1alpha2ContainerizedWorkloadSpecContainersItems0PortsItems0:
 
 
     check:
-        regex_match(str(name), r"^[a-z]+$")
+        _regex_match(str(name), r"^[a-z]+$")
 
 
 schema CoreOamDevV1alpha2ContainerizedWorkloadSpecContainersItems0ReadiessProbe:
diff --git a/pkg/swagger/generator/templates/header.gotmpl b/pkg/swagger/generator/templates/header.gotmpl
index 707aeab..496ad76 100644
--- a/pkg/swagger/generator/templates/header.gotmpl
+++ b/pkg/swagger/generator/templates/header.gotmpl
@@ -19,7 +19,7 @@ Editing this file might prove futile when you re-run the KCL auto-gen generate c
 import {{ .ImportPath }}{{ if .MustAsName }} as {{ .AsName }}{{ end }}
 {{- end }}
 {{- if .HasPatternValidation }}
-regex_match = regex.match
+_regex_match = regex.match
 {{- end }}
 {{- end }}
 {{ "\n" -}}
diff --git a/pkg/swagger/generator/templates/schemaexpr.gotmpl b/pkg/swagger/generator/templates/schemaexpr.gotmpl
index 6d0726b..2494176 100644
--- a/pkg/swagger/generator/templates/schemaexpr.gotmpl
+++ b/pkg/swagger/generator/templates/schemaexpr.gotmpl
@@ -6,7 +6,7 @@
 {{- end }}
 {{- if .MinLength }}len({{ .EscapedName }}) >= {{.MinLength}}{{ if not .Required }} if {{ .EscapedName }} not in [None, Undefined]{{ end }}
 {{- end }}
-{{- if .Pattern }}regex_match(str({{ .EscapedName }}), r"{{.Pattern}}"){{ if not .Required }} if {{ .EscapedName }}{{ end }}
+{{- if .Pattern }}_regex_match(str({{ .EscapedName }}), r"{{.Pattern}}"){{ if not .Required }} if {{ .EscapedName }}{{ end }}
 {{- end }}
 {{- if .UniqueItems }}isunique({{ .EscapedName }}){{ if not .Required }} if {{ .EscapedName }}{{ end }}
 {{- end }}
diff --git a/pkg/swagger/generator/templates/schemavalidator.gotmpl b/pkg/swagger/generator/templates/schemavalidator.gotmpl
index 8f0d78e..c7a4ee8 100644
--- a/pkg/swagger/generator/templates/schemavalidator.gotmpl
+++ b/pkg/swagger/generator/templates/schemavalidator.gotmpl
@@ -14,7 +14,7 @@
         len({{ .EscapedName }}) >= {{.MinLength}}{{ if not .Required }} if {{ .EscapedName }}{{ end }}
     {{- end }}
     {{- if .Pattern }}
-        regex_match(str({{ .EscapedName }}), r"{{.Pattern}}"){{ if not .Required }} if {{ .EscapedName }}{{ end }}
+        _regex_match(str({{ .EscapedName }}), r"{{.Pattern}}"){{ if not .Required }} if {{ .EscapedName }}{{ end }}
     {{- end }}
     {{- if .UniqueItems }}
         isunique({{ .EscapedName }}){{ if not .Required }} if {{ .EscapedName }}{{ end }}