Alright, so I'm using AS3 to get variables from a plain text file. The variables are loaded, and assigned as a variable in Flash.
Code:
var checkNew:Timer = new Timer(2000);
checkNew.addEventListener(TimerEvent.TIMER, reConnect);
checkNew.start();
function reConnect(evt:TimerEvent):void{
	var request:URLRequest = new URLRequest("vars/vars.php?"+new Date().getTime());
	request.method = URLRequestMethod.GET;
	var loader:URLLoader = new URLLoader();
	loader.dataFormat = URLLoaderDataFormat.VARIABLES;
	loader.addEventListener(Event.COMPLETE, completeHandler);
	loader.load(request);
}
function completeHandler(evt:Event) {
	var gamertagText = evt.target.data.gamertag;
	addEventListener(Event.ENTER_FRAME, gamertagShow);
	function gamertagShow(event:Event){
		gamertagHolder.gamertag.text = String(gamertagText);
	}
}
So basically as you can see here, the gamertag is loaded from a plain text PHP file and converted into a variable. What I need to be able to do is tell whether or not that variable has changed (ex. 1 changed to 2). Is there a way of doing this in AS3?