diff --git a/karavan-core/src/core/api/CamelUtil.ts b/karavan-core/src/core/api/CamelUtil.ts
index e68e2ab3dee..993bb306cc4 100644
--- a/karavan-core/src/core/api/CamelUtil.ts
+++ b/karavan-core/src/core/api/CamelUtil.ts
@@ -215,7 +215,7 @@ export class CamelUtil {
                 if (property.type === 'string' && !property.isArray && (value === undefined || !value.trim())) {
                     result[0] = false;
                     result[1].push(`${property.displayName} is required`);
-                } else if (property.type === 'ExpressionDefinition') {
+                } else if (['ExpressionSubElementDefinition', 'ExpressionDefinition'].includes(property.type)) {
                     const expressionMeta = CamelMetadataApi.getCamelModelMetadataByClassName('ExpressionDefinition');
                     const expressionCheck = expressionMeta && value !== undefined && expressionMeta?.properties.some(ep => {
                         const expValue = value[ep.name];
diff --git a/karavan-designer/public/example/demo.camel.yaml b/karavan-designer/public/example/demo.camel.yaml
index 39337079ef9..cad0fb07dfd 100644
--- a/karavan-designer/public/example/demo.camel.yaml
+++ b/karavan-designer/public/example/demo.camel.yaml
@@ -9,16 +9,7 @@
       steps:
         - aggregate:
             id: aggregate-bf73
-        - to:
-            id: to-7baa
-            uri: jms
-            parameters:
-              destinationName: test
-        - marshal:
-            id: marshal-136a
-            json:
-              id: json-4655
-        - unmarshal:
-            id: unmarshal-70d1
-            json:
-              id: json-ecfe
+            correlationExpression:
+              groovy:
+                id: groovy-ed69
+                expression: saasdsa
\ No newline at end of file