ActionScript 2.0 :: How To Obtain Variables From PHP

I have problem with obtaining variables from php script.
Here is my php script
<?php
echo "&Files=1,2,3";
php>

And now in the actionscript 2.0
var GVars:LoadVars = new LoadVars();
var Pictures:Array = new Array();
GVars.onLoad = lVars;
GVars.load("[URL]");
function lVars(){
trace("Files: " + this.Files);
Pictures = this.Files.split(",");
} trace("Array: " + Pictures.length);

Here is the output in the trace window
Array: 0
Files: 1,2,3,

As you can see the first is Array:0 which means that actionscript ran first trace
("Array: " + Pictures.length);
End then lVars function. I cannot load variables from php in correct order.