ActionScript 2.0 :: Loading External File From A Button Press/ Not Working?

myData = new LoadVars();
myData.load("myText1.txt");
myData.onLoad = function() {

[Code].....

I thought i would be able to load the files from the press of a button.

this doesnt work i can load the external files from the btns,

Problem this is not working.I cant understnd the reason why. when the above code works fine. Problem is i do need to load the external varaibles with a button press.

//loading external file 2
myData = new LoadVars();
myData.load("myText1.txt");

[Code].....