Cannot pass variables from PHP to actionscript 3.0

Question

I am using CS3 and I write the following code as to pass variable to flash from PHP
Actionscript
var myLoader:URLLoader = new URLLoader();
myLoader.dataFormat = URLLoaderDataFormat.TEXT;
var myRequest:URLRequest=new URLRequest("http://localhost/moodle/value.php");
myLoader.load(myRequest);
myLoader.addEventListener(Event.COMPLETE,onCompleteHandler);
var myValue: String;
function onCompleteHandler(e:Event):void{
          var myvariable: URLVariables = new URLVariables(e.target.data);
          myValue = myvariable.values;
                  trace(myValue);
PHP file
<?php
   echo ('values = 8');
?>
But I always get the error and cannot get the values by using trace();
Before i try to use "myLoader.dataFormat = URLLoaderDataFormat.VARIABLES;" I still get the same error.
Error: Error #2101: The String passed to URLVariables.decode() must be a URL-encoded query string containing name/value pairs
          at Error$/throwError()
          at flash.net::URLVariables/decode()
          at flash.net::URLVariables$iinit()
          at flash.net::URLLoader/flash.net:URLLoader::onComplete()
Can anyone help me?

Answer 1

The error is fixed.The new version is like that
Actionscript
var myLoader:URLLoader = new URLLoader();
myLoader.dataFormat = URLLoaderDataFormat.TEXT;
var myRequest:URLRequest=new URLRequest("http://localhost/moodle/value.php");
myLoader.load(myRequest);
myLoader.addEventListener(Event.COMPLETE,onCompleteHandler);
var myValue: String;
function onCompleteHandler(e:Event):void{
          var myvariable: URLVariables = new URLVariables(e.target.data);
          myValue = myvariable.values;
                  trace(myValue);
php file
<?php
   echo "values=8";
?>
The output finally is "null" in flash file. Why does it happen? It should give me 8 when I input trace(myValue);