SoundTransform

programming flash
1

http://www.helmutgranda.com/2008/02/11/stop-sound-of-loaded-swfs-in-as3/

I found this code through google search. I tried adapting it to my current code and I’m having trouble. Is it because this essentially creates a new class?

Here is my code without the mute option:

 import flash.media.SoundTransform;
 import flash.display.Loader;

var imageLoader:Loader;


function loadImage(url:String):void {
    // Show Preloader
    preloader.visible = true;
    
    // Set properties on my Loader object
    imageLoader = new Loader();
    imageLoader.load(new URLRequest(url));
    imageLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, imageLoading);
    imageLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, imageLoaded);
}
loadImage("swfs/pul.swf");

function imageLoaded(e:Event):void {
    // Load Image
    
    imageLoadArea.addChild(imageLoader);
    imageLoader.name = "pulmi";
    imageLoader.width = 320;
    imageLoader.height = 280;
    // Hide Preloader
    preloader.visible = false;

}

function imageLoading(e:ProgressEvent):void {
    // Get current download progress
    var loaded:Number = e.bytesLoaded / e.bytesTotal;
    
    // Send progress info to "preloader" movie clip
    preloader.SetProgress(loaded);
}

I would think that I could just create a new SoundTransform and then apply it to my movieClip

function imageLoaded(e:Event):void {
    // Load Image
    
    imageLoadArea.addChild(imageLoader);
    imageLoader.name = "pulmi";
    imageLoader.width = 320;
    imageLoader.height = 280;
    // Hide Preloader
    preloader.visible = false;
    var  mySoundTransform = new SoundTransform();
     mySoundTransform.volume = 0; 
     imageLoader.soundTransform = mySoundTransform;

}

But I get this error:
1119: Access of possibly undefined property soundTransform through a reference with static type flash.display:Loader.