[Action Script] communications with loaded .swf May,2012

For example, i got video player .swf, where i got URL string that i would like to change inside my parent project, inside video player it looks like this:
ActionScript Code: // url to flv filevar strSource:Object = ("video/video.mp4");
I'm loading .swf inside parent project like this:

ActionScript Code: // create new loader for video playervar loaderVideo:Loader = new Loader();// spceify URL of video player .swfvar videoURL:String = "system/CLplayer.swf";// set video request from videoURLvar videoURLreq:URLRequest = new URLRequest(videoURL);// create container for video playervar video:MovieClip;// check if video is loadedvar videoIsLoaded:Boolean = false; // function to cast 'DisplayObject' to 'MovieClip'function initVideo(event:Event):void {    video = MovieClip(loaderVideo.content);    // set video loaded flag    videoIsLoaded = true;}// Tell the loader to call 'initHandler' after the swf is initialized.loaderVideo.contentLoaderInfo.addEventListener(Event.INIT, initVideo);// load video content from videoURL stringloaderVideo.load(videoURLreq);// add video on stageaddChild(loaderVideo);
And i would like to see the result like in code for this .swf made in panorama2VR:
ActionScript Code: // create new loader for vr playervar loaderVR:Loader = new Loader();// spceify URL of 1st vr .swf to start tourvar vrURL:String = "system/vr/inside.swf";// set vr request from vrURLvar vrURLreq:URLRequest = new URLRequest(vrURL);// create container for vrvar vr:MovieClip;// check if video is loadedvar vrIsLoaded:Boolean = false;// function to cast 'DisplayObject' to 'MovieClip'function initHandler(event:Event):void {    vr = MovieClip(loaderVR.content);    // add vr to the stage    addChild(loaderVR);    // set alpha to 0    loaderVR.alpha = 0;    // slowly change alpha of loader    TweenLite.to(loaderVR, 0.7 ,{alpha: 1, delay: 0.1});    // set vr loaded flag    vrIsLoaded = true;}function initPanorama(e:Event) {// check if the panorama object is available and initialize it    if ((vr!=null) && (vr.pano!=null)) {        removeEventListener( Event.ENTER_FRAME , initPanorama);        vr.x=230;        vr.y=98;        vr.pano.setWindowSize(735, 530);    }}// call initPanorama every frameaddEventListener(Event.ENTER_FRAME, initPanorama);// Tell the loader to call 'initHandler' after the swf is initialized.loaderVR.contentLoaderInfo.addEventListener(Event.INIT, initHandler);// load video content from vrURL stringloaderVR.load(vrURLreq);Here i can change vr.x / vr.y and setWindowSize even dynamicly from parent project!
How have they done it?
communications with loaded .swf

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