FileReference onProgress

programming flash
1

I try to make download and use this code.


import flash.net.FileReference;

var listener:Object = new Object();

listener.onProgress = function(file:FileReference, bytesLoaded:Number, bytesTotal:Number):Void {
    trace("onProgress: " + file.name + " with bytesLoaded: " + bytesLoaded + " bytesTotal: " + bytesTotal);
}

var fileRef:FileReference = new FileReference();
fileRef.addListener(listener);
var url:String = "http://www.macromedia.com/platform/whitepapers/platform_overview.pdf";
fileRef.download(url, "FlashPlatform.pdf");

How is possible to dipslay in Text Area downloading progress - bytesLoaded?
Or have you any example how can I use ProgressBar component to display downloading process?
Thank you