What is the syntax to be used to make the list type enum attributes required using conditional scripting in RTC?

Hi All,

I am trying to write conditional scripting to make the list type custom enum attribute required and not allowing to save  in Attribute customization section..

I have applied the Required Attribute preconditions according to role ,, the script works fine for notmal attributes like priority but when i built this for custom list type enum attribute m not able to succeed.


dojo.provide("com.example.Condition1");

(function() {
var WorkItemAttributes = com.ibm.team.workitem.api.common.WorkItemAttributes;
    dojo.declare("com.example.Condition1", null, {

        matches: function(workItem, configuration) {
        var WItype = workItem.getLabel(WorkItemAttributes.TYPE);
        var brand = workItem.getLabel("Brands");
      
        var PA = workItem.getLabel(WorkItemAttributes.PROJECT_AREA);

       
        if( WItype == "Feature" )
        {
         if( brand == null)
         {
             return 1;
           }
           
            else
            {return  0;
            }
            }
        }

    });
})();

In the above script  brands is and list type enum .. But i failed to make the script to behave normally ?
Is there any issue with my above query? or any syntax ti be used  specially for enum list type attribute.

Thank you