fix readme

README.md

@@ -42,20 +42,20 @@ If you just want to start using the library, put the following dependency into y
 <dependency>
   <groupId>io.holunda.data</groupId>
   <artifactId>camunda-bpm-data</artifactId>
-  <version>1.4.0</version>
+  <version>1.5.0</version>
 </dependency>
 ```
 
 If you are using Gradle Kotlin DSL add to your `build.gradle.kts`:
 
 ``` kotlin
-implementation("io.holunda.data:camunda-bpm-data:1.4.0")
+implementation("io.holunda.data:camunda-bpm-data:1.5.0")
 ```
 
 For Gradle Groovy DSL add to your `build.gradle`:
 
 ``` groovy
-implementation 'io.holunda.data:camunda-bpm-data:1.4.0'
+implementation 'io.holunda.data:camunda-bpm-data:1.5.0'
 ```
 ### Variable declaration
 Now your setup is completed, and you can declare your variables like this:
@@ -114,7 +114,8 @@ public class ApproveOrderTaskController {
 
     @GetMapping("/{taskId}")
     public ResponseEntity<ApproveTaskDto> loadTask(@PathVariable("taskId") String taskId) {
-        Order order = ORDER.from(taskService, taskId).get();
+        VariableReader reader = CamundaBpmData.reader(taskService, taskId);
+        Order order = reader.get(ORDER);
         return ResponseEntity.ok(new ApproveTaskDto(order));
     }