Calling a seperate .swf file within anouther swf

Thank you.

I tried this and it worked

Below is the script I used

btnName.addEventListener(MouseEvent.CLICK, tryMeButtonFunction);
function tryMeButtonFunction(event: MouseEvent) {

import flash.net.URLRequest;
import flash.display.Loader;
import flash.events.Event;
import flash.events.ProgressEvent;

  function startLoad() {
   var btnName:Loader = new Loader();
   var mRequest:URLRequest = new URLRequest("file.swf");
   btnName.contentLoaderInfo.addEventListener(Event.COMPLETE, onCompleteHandler);
   //btnName.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgressHandler);
   btnName.load(mRequest);
   }

  function onCompleteHandler(loadEvent:Event) {
         addChild(loadEvent.currentTarget.content);
   }
  function onProgressHandler(mProgress:ProgressEvent) {
   var percent:Number = mProgress.bytesLoaded/mProgress.bytesTotal;
   trace(percent);
   }
  startLoad();
}