DevOps, CI/CD and Automation

Using a on-change-listener on an oj-select component.  We do not want this to fire on page load.  I found a previous post saying to use this:

1.   self.changeHandler = function (event, data) { 
2.             if (data.value) { 
3.                 console.log(data.value); 
4.             } 
5.         };

The "data" object is returning undefined.  Has this changed in a newer release.  What is the proper way to implement this?