I have a program written in Flash Builder with Flex 4.6 sdk and swf movie with some symbols inside. Those symbols moving around the stage.

What I need is load that swf in my program and replace one of those symbols to my bitmap and show whole swf in flashContainer.

There is my code for now:

var swfLoader:Loader = new Loader();
var bgUrl:URLRequest = new URLRequest("testMovie.swf");
swfLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, function(event: Event) : void {

    var movie: MovieClip =  event.target.content;

    var headClass: Class = movie.loaderInfo.applicationDomain.getDefinition("headSymbol") as Class;
    var head:MovieClip = new headClass() as MovieClip;
    head.addChild(bmp);

    flashContainer.source = movie;
});

but in flashContainer showed old movie.

If I do

flashContainer.source = head;

then only head with my bmp appears.

Need help. And sorry for my bad English.