Data Element Change Event Not Working

[MktgCloudUser]

Hello,

We have an video component that updates a data layer whenever an event occurs such as Playback started, percentage reached, etc.  Using the function below, I can see the data layer is in fact being updated by testing for the value's existence after the events have occurred.  Is there a reason why the Data Element Change isn’t activating? Also, since I don’t have access to the AEM source code, does that mean a Direct Call isn’t an option?

Thanks

function updateDataLayer (actionName, percentComplete) { 
if (dl != undefined) {              
     Object.assign(dl.event, { 
        action:             actionName, 
        percentViewed:      percentComplete 
     }); 
  } else {  
     console.error('"' + dataLayerName + '" Data Layer Object Not Found');  
  } 
}