ListBox right side list doesn't support enable/disable

[NerdBrick]

I was able to successfully use the .enable() method to disable an item in the list box on the left. However, it doesn't do the same for the the right side items. 

Demo:
https://dojo.telerik.com/eVoZahaX

Any other way to support disabling any items on the right side? We want to pre-load some values on the right side, but not allow them to be moved. 

[NerdBrick]

Never mind. I realized it was the Jquery Selector in my example that was wrong. 

Fixed.