I have a dynamic text field that loads in from another source

this is the code I use:

loadText = new LoadVars();
loadText.load("http://www.djnow.co.uk/~newsite/data.txt");
loadText.onLoad = function() {
infoa.text = this.infoa;
};

this works fine when its on the main time movie but I want to put it in a
movie clip and make it move but when I put it a movie clip it just disapears?
does any one know how to remidy this?

please help