[flexcoders] Dispatch Event in PopUp TitleWindow

[jmfillman]

How do I manually trigger an event, in a popup window, from the parent 
application?

For example:

In my parent application:

myPopUp.dispatchEvent(new MouseEvent(MouseEvent.CLICK));

In the popup window:

btnSearch.addEventListener(MouseEvent.CLICK, onClick, false, 0, true);

How do I make this work?