WonderflでYoutubeの動画を使うには？

/**
 * Copyright Nicolas ( http://wonderfl.net/user/Nicolas )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/l5ch
 */

// forked from Nicolas's Wonderflで使いたい画像を簡単にアップロード

//追記：自己解決しました
//(I can find the solution of this problem, thank you.)
//http://wonderfl.net/code/ecdf095f099ae22c50bf08afe6445b44b60a482c


//今度はyoutubeの動画利用に挑戦
//・・・・・・してみたがうまくいかないのでquestionタグをつけておく。
//"related video:"にURLを貼りつけて，それからどうすればいいのでしょう？？

//超適当に英文も書いとく。

/* I will use YOUTUBE's video.
 * On wonderfl, I pasted URL of YOUTUBE's video to 
 * "related video:" textBox.
 * After that, What I have to do ??
 */
 
package {
    import flash.display.Sprite;
    import flash.events.*;
    import flash.media.Video;
    import flash.net.NetConnection;
    import flash.net.NetStream;

    
    
    public class FlashTest extends Sprite {
        
        //youtubeのURL
        private var url:String = "http://www.youtube.com/watch?v=eVr99aI6-qs"
        
        private var nc:NetConnection;
        private var ns:NetStream;
        
        
        public function FlashTest() {        
            nc = new NetConnection();
            nc.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
            nc.connect(null);
            
            
        }
        
        private function netStatusHandler(e:NetStatusEvent):void {
            if (e.info.code == "NetConnection.Connect.Success") {
                    connectStream();  
            }

        }
        private function connectStream():void {
            ns = new NetStream(nc);
            var video:Video = new Video();
            video.attachNetStream(ns);
            ns.play(url);
            addChild(video);
        }    
    }
}