Unable to set attributes via RM API

I am trying to set attributes for a selected artifact. I am able to change the attributes without errors if the artifact is a Requirement. We have different artifact types and I cannot update their values via my script.

Here is what I am doing. This works when the selected artifact is a 'Requirement' I want to use this with a different artifact type.

M.Data.getAttributes(ref, [RM.Data.Attributes.ARTIFACT_TYPE], function(result) {
     
      // Store any required attribute changes here
      var toSave = [];
     
      var artType = new RM.ArtifactType('TRT Requirment');
      // Go through artifact data examining priority values
      result.data.forEach(function(aa){
      
         var raised = 34;
        // Reuse the existing RM.ArtifactAttributes
       aa.values['VerifiedCount'] = raised.toString();
       toSave.push(aa);
     }
      });
     
          // Perform a bulk save for all changed attributes
      RM.Data.setAttributes(toSave, function(result){
              if(result.code !== RM.OperationResult.OPERATION_OK)
              {
              console.log('error');
        }
          });
   });