When importing text from an external file is needed. ChangemyTextField to the name of the objects and stuff.txt to the the name of the external file.
function textLoadComplete(event:Event):void
{
myTextField.text = textLoader.data;
}
var textLoader:URLLoader = new URLLoader();
var textReq:URLRequest = new URLRequest("stuff.txt");
textLoader.load(textReq);
textLoader.addEventListener(Event.COMPLETE, textLoadComplete);