Dynamically loaded swf to communicate with MovieClip on the stage

Question

I have a heck of time here with an issue. I have an xml document that when a certain button on the stage is clicked it loads it's corresponding external swf into an empty movieclip on the stage. This empty movie clip is a holder for all external swfs.
So what I'm trying to do is when an external swf is loaded that has buttons on it, I need those buttons to communicate with the main timeline and remove a mc that is on the Stage. I need the currently loaded swf(s) to be able to do this. So whatever the currently loaded external swf is that's loaded, I need it to talk to the main timeline. (I have quite a few external swfs that need to do this) So I imagine I need to somehow target the currently loaded external swf to get it to talk to the main timeline.
The code below in summary doesn't work but it doesn't give errors either. I don't pretend to know what I'm doing and I haven't been successful in searching for a solution to this particular issue. If someone could give me guidance or direct me to a solution. I'd so much appreciate it.
// main timeline object
var index:Object=this;
function loadComplete (e:Event) {
        TweenMax.to(index.mcholder,1, {alpha: .5});
// add the current module to the mcholder movieclip by using addChild
        index.mcholder.addChild(e.currentTarget.content);
       (e.currentTarget.content as MovieClip).addEventListener("eventTriggered", startListener);
function startListener(e:Event):void {
var ext_swf:MovieClip;
ext_swf = e.currentTarget.content as MovieClip;
trace("external swf");
ext_swf.button1.addEventListener(MouseEvent.CLICK, talktomainswf);
function talktomainswf():void {
TweenMax.to(index.mc_thatsonthestage, 1, {x:1000});
// now we have the first load we set firstLoad to false
        index.firstLoad = false;
    function loadError (e:Event) {
        trace("error");

Answer 1

You can use the event dispatcher to communicate between external swfs and a main timeline,
like so:
//in an external swf
//Once loaded
function onLoadComplete(event:Event):void
     //dispatch an event in the form of a string
     dispatchEvent(new Event("Talk to Main Timeline")); 
//On the Main timeline
//listen for "Talk to Main Timeline"
stage.addEventListener("Talk to Main Timeline", listenForCallsFromExternalFiles, true);
//if the event is heard, do this:
function listenForCallsFromExternalFiles(e:Event):void
     trace("I heard ya, now do stuff...");
That's the basic idea anyways, I use it all the time.
hope that helps,
~chipleh