OZG-4597 fix building success value

src/main/java/de/ozgcloud/formcycle/WorkflowElementNodePlugin.java

@@ -140,7 +140,7 @@ public final class WorkflowElementNodePlugin
 		// [%$Action.RESULT.name%]
 		// [%$Action.RESULT.items.name%]
 		// [%$Action.RESULT.items.state%]
-		return factory.recordBuilder().requiredProperty(ExecutionResult.VORGANGNUMMER_PROPERTY_KEY, f -> f.string()).build();
+		return factory.recordBuilder().requiredProperty(ExecutionResult.VORGANGNUMMER_PROPERTY_KEY, factory.string()).build();
 	}
 
 	@Override