diff --git a/Configuration/Form/FormElements/FileUpload.yaml b/Configuration/Form/FormElements/FileUpload.yaml
index 3489ca4..804bd13 100644
--- a/Configuration/Form/FormElements/FileUpload.yaml
+++ b/Configuration/Form/FormElements/FileUpload.yaml
@@ -30,3 +30,11 @@ prototypes:
                 60:
                   value: xl
                   label: formEditor.elements.FormElement.editor.size.xl.label
+          propertyCollections:
+            validators:
+              10:
+                editors:
+                  400:
+                    templateName: Inspector-TextEditor
+                    propertyPath: customErrorMessage
+                    doNotSetIfPropertyValueIsEmpty: true
diff --git a/Configuration/TypoScript/Extensions/tx_form.typoscript b/Configuration/TypoScript/Extensions/tx_form.typoscript
index a6d4102..0e36eff 100644
--- a/Configuration/TypoScript/Extensions/tx_form.typoscript
+++ b/Configuration/TypoScript/Extensions/tx_form.typoscript
@@ -1,7 +1,7 @@
 plugin.tx_form {
     settings {
         yamlConfigurations {
-            100 = EXT:rmnd_headless/Configuration/Form/BaseSetup.yaml
+            1731482571 = EXT:rmnd_headless/Configuration/Form/BaseSetup.yaml
         }
     }
 }
@@ -9,7 +9,7 @@ plugin.tx_form {
 module.tx_form {
     settings {
         yamlConfigurations {
-            100 = EXT:rmnd_headless/Configuration/Form/BaseSetup.yaml
+            1731482571 = EXT:rmnd_headless/Configuration/Form/BaseSetup.yaml
         }
     }
 }
\ No newline at end of file