How to load .swf file using action script 3.0

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

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

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