Mine

public function loadPopUpModule(mod:String):void {
    var popup:IFlexDisplayObject;
    var m:IModuleInfo = ModuleManager.getModule("modules/" + mod + ".swf");
    m.addEventListener(ModuleEvent.READY, 
    	function(e:Event):void {
            popup = PopUpManager.createPopUp(cvMainArea, ???? , true);
			PopUpManager.centerPopUp(popup);            
        });
}