Problem with Event Propagation

I am having a problem using Event Propagation. I have a movieclip with a Mouse Over and Mouse Out function attached to it. The visual result I am seeking is this:

This SWF was created by using twelve instances of a movieclip and me writing twelve separate functions and event listeners for each instance. I would like to create this same effect with over a hundred instances of this movieclip so writing that much code is inefficient.

Instead I filled another movieclip with instances of the one I want (mc_light) and then I wrote this action script;

function lightOver(evt:MouseEvent):void{“over”);

function lightOut(evt:MouseEvent):void{“out”);

bars_mc.addEventListener(MouseEvent.MOUSE_OVER,lig htOver);
bars_mc.addEventListener(MouseEvent.MOUSE_OUT,ligh tOut);

It’s not working. I have tried several variations but none work. This seems like a fairly simple procedure so I am a little perplexed. The movieclip mc_light has its own timeline with two labels, “over” and “out”.

This directory contains two FLA’s:

The one named “bars2.fla” is the one I am trying to get to work.

What am I doing wrong? Is what I want to do even possible?

Thanks in advance for any input!