Mysql- PHP- FLASH function. (Passing function to a package)

Question

I've just started with ActionScript3.0, and is currently
working on a flash that is to communicate with a mysql database and
have found a great deal of example code online that I've started to
work with.
Currently I have the following package added to my project:
quote:
package
import flash.events.*;
import flash.net.*;
public class SendAndLoad
public function SendAndLoad()
public function sendData( url:String, _vars:URLVariables,
completeFunc:Function ):void
var request:URLRequest = new URLRequest( url );
var loader:URLLoader = new URLLoader();
loader.dataFormat = URLLoaderDataFormat.VARIABLES;
request.data = _vars;
request.method = URLRequestMethod.POST;
loader.addEventListener( Event.COMPLETE, completeFunc );
loader.addEventListener( IOErrorEvent.IO_ERROR, onIOError );
loader.load(request);
//private function handleComplete( event:Event ):void
// var loader:URLLoader = URLLoader( event.target );
// trace( "Par: " + loader.data.par );
// trace( "Message: " + loader.data.msg );
private function onIOError(event:IOErrorEvent):void
trace("Error loading URL.");
And is running the following code in my flash:
quote:
import SendAndLoad;
import flash.net.URLVariables;
function loadUsername( event:Event ):void
var loader:URLLoader = URLLoader( event.target );
//userNameText.text = "ffff";
userNameText.text = loader.data.user;
var url:String = "pages/test.php";
var vars:URLVariables = new URLVariables();
var sal:SendAndLoad = new SendAndLoad();
sal.sendData( url, vars, loadUsername );
As you can see I am trying to seperate the function to be
called when the return value of the page I am accessing returns
with a value, so I wont need to pass all different actions to be
called on different pages I will be requesting throughout my flash
program.
But as it is now, the function loadUsername, never even gets
called, which I assume is because the package can't call the
function outside it.
As I said, I am just starting out with ActionScript 3.0, and
is kind of stuck at this.
Any thoughts?

Answer 1

I never tried to pass a function into a class an attempt to
execute it. I am not sure this approach will ever work.
I suggest the following approach (see code):