Faulty activity was created after duplicate merge

entity/Person_entity/entityfields/duplicateactions/children/integratecurrentintoselectedaction/onActionProcess.js

@@ -3,15 +3,15 @@ import("system.vars");
 import("system.neon");
 import("DuplicateScanner_lib");
 
-let sourceContactId = vars.get("$param.DuplicateCurrentContactId_param");
-let targetContactId = vars.get("$sys.selection");
+var sourceContactId = vars.get("$param.DuplicateCurrentContactId_param");
+var targetContactId = vars.get("$sys.selection")[0];
 
 //todo the actual merge ought to happen in a separate view where the contact infos can be merged manually by the user.
-let mergeSuccess = DuplicateScannerUtils.MergePerson(sourceContactId, targetContactId);
+var mergeSuccess = DuplicateScannerUtils.MergePerson(sourceContactId, targetContactId);
 
 if(mergeSuccess)
 {
-    let currentContactId = EmployeeUtils.getCurrentContactId();
+    var currentContactId = EmployeeUtils.getCurrentContactId();
     if(currentContactId == null)
         currentContactId = "";
     DuplicateScannerUtils.CreateMergeSuccessActivity(sourceContactId, targetContactId, currentContactId, "Person");