diff --git a/backend-diagram-converter/core/src/main/java/org/camunda/community/migration/converter/visitor/AbstractListenerVisitor.java b/backend-diagram-converter/core/src/main/java/org/camunda/community/migration/converter/visitor/AbstractListenerVisitor.java
index 1658a501..0f7daaf7 100644
--- a/backend-diagram-converter/core/src/main/java/org/camunda/community/migration/converter/visitor/AbstractListenerVisitor.java
+++ b/backend-diagram-converter/core/src/main/java/org/camunda/community/migration/converter/visitor/AbstractListenerVisitor.java
@@ -3,29 +3,38 @@
 import org.camunda.community.migration.converter.DomElementVisitorContext;
 import org.camunda.community.migration.converter.NamespaceUri;
 import org.camunda.community.migration.converter.message.Message;
+import org.camunda.community.migration.converter.visitor.AbstractListenerVisitor.ListenerImplementation.ClassImplementation;
+import org.camunda.community.migration.converter.visitor.AbstractListenerVisitor.ListenerImplementation.DelegateExpressionImplementation;
+import org.camunda.community.migration.converter.visitor.AbstractListenerVisitor.ListenerImplementation.ExpressionImplementation;
+import org.camunda.community.migration.converter.visitor.AbstractListenerVisitor.ListenerImplementation.ScriptImplementation;
 
 public abstract class AbstractListenerVisitor extends AbstractCamundaElementVisitor {
 
   @Override
   protected final Message visitCamundaElement(DomElementVisitorContext context) {
-    String implementation = findListenerImplementation(context);
+    ListenerImplementation implementation = findListenerImplementation(context);
     String event = context.getElement().getAttribute(NamespaceUri.CAMUNDA, "event");
     return visitListener(context, event, implementation);
   }
 
   protected abstract Message visitListener(
-      DomElementVisitorContext context, String event, String implementation);
+      DomElementVisitorContext context, String event, ListenerImplementation implementation);
 
-  private String findListenerImplementation(DomElementVisitorContext context) {
+  private ListenerImplementation findListenerImplementation(DomElementVisitorContext context) {
     String listenerImplementation = context.getElement().getAttribute("delegateExpression");
-    if (listenerImplementation == null) {
-      listenerImplementation = context.getElement().getAttribute("class");
+    if (listenerImplementation != null) {
+      return new DelegateExpressionImplementation(listenerImplementation);
     }
-    if (listenerImplementation == null) {
-      listenerImplementation = context.getElement().getAttribute("expression");
+
+    listenerImplementation = context.getElement().getAttribute("class");
+    if (listenerImplementation != null) {
+      return new ClassImplementation(listenerImplementation);
+    }
+    listenerImplementation = context.getElement().getAttribute("expression");
+    if (listenerImplementation != null) {
+      return new ExpressionImplementation(listenerImplementation);
     }
-    if (listenerImplementation == null
-        && context.getElement().getChildElementsByNameNs(NamespaceUri.CAMUNDA, "script") != null
+    if (context.getElement().getChildElementsByNameNs(NamespaceUri.CAMUNDA, "script") != null
         && !context
             .getElement()
             .getChildElementsByNameNs(NamespaceUri.CAMUNDA, "script")
@@ -36,7 +45,21 @@ private String findListenerImplementation(DomElementVisitorContext context) {
               .getChildElementsByNameNs(NamespaceUri.CAMUNDA, "script")
               .get(0)
               .getAttribute("scriptFormat");
+      return new ScriptImplementation(listenerImplementation);
     }
-    return listenerImplementation;
+    throw new IllegalStateException("Unknown listener implementation");
+  }
+
+  protected sealed interface ListenerImplementation {
+    String implementation();
+
+    record DelegateExpressionImplementation(String implementation)
+        implements ListenerImplementation {}
+
+    record ClassImplementation(String implementation) implements ListenerImplementation {}
+
+    record ExpressionImplementation(String implementation) implements ListenerImplementation {}
+
+    record ScriptImplementation(String implementation) implements ListenerImplementation {}
   }
 }
diff --git a/backend-diagram-converter/core/src/main/java/org/camunda/community/migration/converter/visitor/impl/element/ExecutionListenerVisitor.java b/backend-diagram-converter/core/src/main/java/org/camunda/community/migration/converter/visitor/impl/element/ExecutionListenerVisitor.java
index 1160eee0..7a6ce219 100644
--- a/backend-diagram-converter/core/src/main/java/org/camunda/community/migration/converter/visitor/impl/element/ExecutionListenerVisitor.java
+++ b/backend-diagram-converter/core/src/main/java/org/camunda/community/migration/converter/visitor/impl/element/ExecutionListenerVisitor.java
@@ -8,6 +8,7 @@
 import org.camunda.community.migration.converter.message.MessageFactory;
 import org.camunda.community.migration.converter.version.SemanticVersion;
 import org.camunda.community.migration.converter.visitor.AbstractListenerVisitor;
+import org.camunda.community.migration.converter.visitor.AbstractListenerVisitor.ListenerImplementation.DelegateExpressionImplementation;
 
 public class ExecutionListenerVisitor extends AbstractListenerVisitor {
   @Override
@@ -17,18 +18,23 @@ public String localName() {
 
   @Override
   protected Message visitListener(
-      DomElementVisitorContext context, String event, String implementation) {
+      DomElementVisitorContext context, String event, ListenerImplementation implementation) {
     if (isExecutionListenerSupported(
         SemanticVersion.parse(context.getProperties().getPlatformVersion()))) {
       ZeebeExecutionListener executionListener = new ZeebeExecutionListener();
       executionListener.setEventType(EventType.valueOf(event));
-      executionListener.setListenerType(implementation);
+      if(implementation instanceof DelegateExpressionImplementation){
+        // TODO get the pattern as soon as its on the main
+        executionListener.setListenerType();
+      }else{
+        executionListener.setListenerType(implementation.implementation());
+      }
       context.addConversion(
           AbstractExecutionListenerConvertible.class,
           c -> c.addZeebeExecutionListener(executionListener));
-      return MessageFactory.executionListenerSupported(event, implementation);
+      return MessageFactory.executionListenerSupported(event, implementation.implementation());
     }
-    return MessageFactory.executionListener(event, implementation);
+    return MessageFactory.executionListener(event, implementation.implementation());
   }
 
   private boolean isExecutionListenerSupported(SemanticVersion version) {