Communication from a flex app. to a swf loaded inside it at runtime

I am loading a swf (made with Flex 2) inside another flex
application using the SWFLoader as:
<mx:SWFLoader id="swfLoader1" source="Modules.swf"
width="100%" height="100%"/>
the swf ("Modules.swf' ) loads as expected, but form the
parent movie I want to be able to control (change values of
variables) parameters on the child swf (swfLoader1).
When a click a button in the host movie I want to change the
text on a label on the child movie, but it is not working for me.
I have done this:
when clicking the button call a function doStuff()
public function doStuff():void
var myMovie:* = swfLoader1.content;
myMovie.mod1_desc.text = "blah blah";
But it's not working. Then I tried
public function init():void
_loader = new Loader;
extContent.addChild(_loader);
_loader.contentLoaderInfo.addEventListener(Event.INIT,
doStuff);
_loader.load(new URLRequest("Modules.swf"));
init() is called from creationComplete on the Application
(MXML) and when the _loadr is loaded it calls the doStuff function
above. Again is not working.
Any suggestions on how to do this right?
Gilbert

Probably not. Otherwise lots of great malware would be delivered via Flash.

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Can I load a swf into my Flex app that loads other swf's?

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<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
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this.onLoad = function(){
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[SWF] SwfMobile.swf - 2,639,761 bytes after decompression
[SWF] assets/swf/AS2.swf - 1,470 bytes after decompression
Is there something inherently wrong with loading swf's that load other things? Even if I have the AS2 swf load jpgs they don't load so the format of the target content at the end of the chain doesn't seem to be the issue. Just the act of embedding a swf that loads other things seems to be the problem.

Ah, yes. Using an AVM1 SWF could prove difficult...
I'm going on about 3 hours of sleep at the moment, but let me toss out a few thoughts I have and hopefully something will stick...
Ok, so my first thought what to try and cast the loaded content as a MovieClip and call methods on that, but the fact they are AVM1 throws that out the window.
That leaves LocalConnection, as you mentioned. But this would require you to have code on the receiving end to handle the connection... no good either.
But what if you created a "bridge" in AS2 that holds all the code for the receiving end of LocalConnection (or has the control logic itself, perhaps even eliminating the need for LocalConnection all together!). I think maybe this is what you were trying to do already by loading a SWF into a SWF? Well instead of loading your bridge at runtime, what if you statically linked it into your project as a class?
*a few moments later*
Well it looks like you can in fact link in a a symbol created for AVM1, but it will only come in as a SpriteAsset, and will not include any custom code (which makes sense, since they use entirely different class constructs).
To do the test, I created a symbol exported for actionscript (AS2/Flash8), then linked it in with a CSS style embed. I then instantiated the class and called describeType on it.
So in summery, it looks like calling custom code on the bridge is out (I did not test this extensively, that was just my first impression with this simple test). However, if you may be able to perform the actions you need by attempting to cast the loaded content into something AVM2 can recognize. Apparently it does this automatically when linked in statically, so maybe there is something there worth looking into... mainly, can you do what you need using only the base class and no custom code?
Keep me posted!

A Flex App in browser is a swf file or translated to Javascript

A Flex App in browser is a swf file or translated to Javascript?
Like Flash web site plugins [not whole browser window], exist and Flex plugins?
These are both swf files only without other supporting files?

A Flex app is a SWF and is not translated to Javascript. Many Flex apps do
use Javascript to handle history management and startup focus.

Communication from a flex app. to a swf loaded inside it at runtime

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