Load an image and control it

sorry but i’m newbie in as3, i’m working on application to make a puzzle.
i want to load an image and give it an instance name to control it, i tried the following code
Code:
for (var i:int = 1; i < 4; i++) { var myLoader:Loader = new Loader(); var fileRequest:URLRequest = new URLRequest(“myImage_0” + i + “.gif”); myLoader.load(fileRequest); addChild(myLoader); myLoader.name = “myImage_0” + i; myImage_01.x=100}
the following erroe occured:
1120: Access of undefined property myImage_01.
anyone can help;
thnx in advance