scroll event not firing?

I'm new to EdgeAnimate and am trying to get a parallax type scroll to work.

I have my browser small enough so scroll bars are displayed.  I have set the stage's overflow to "scroll".  In the Stage "scroll" action I have the following:  console.log("scrolled"); 

But it never fires when I scroll.  What am I missing?

I've added a similar "click" action to a rectangle on the stage and that works.

Thanks for any help.

-Mark