Problem with typewriter effect

I am trying to do the normal typwriter effect, I have created a text box and given it the instance name ‘text’ and on another layer I have the actionscript,

myText = “”;
this.onEnterFrame = function() {
text.text = myText.substr(0, type);
type += 2;
myText = “Welcome to Endorsements, this section provides details about the organisations that back 21st Century Sports Ltd and their products, please use the buttons to the side to find out more.”;

I’ve run the movie, but it just doesn’t display anything, why is this happening, i definately know this code works because i have it on another file.

The fla has been attached.