Problem loading external urls [please..]

Question

hello guys,
i am usin this code to run some file and make queries:
ActionScript Code:
var req:URLRequest = new URLRequest("http://site.com/z.php?id=" + user_id + "&mana=" + (Round - 1));
var loader:URLLoader = new URLLoader();
loader.load(req);
when i am running the swf file fas ctrl + enter in the flash cs5  it works great!
but, when i uploading this to my server its not working, or even when i run it from desktop still not working
(not loading the url so my DB not updating)
i dont understand why,
please waiting for your help.

Answer 1

round is just simple number,
i am noobie at AS so id did simple game,
when the user looses his score sends to my server,
in flash when i am testing it usin ctrl + enter it works great,
but if i run the swf file from the desktop or web so the game works but its not sending the score..
here is the full code (little mess):
stage.addEventListener(KeyboardEvent.KEY_DOWN, boatMove);
stage.addEventListener(KeyboardEvent.KEY_DOWN, boatMove); 
playAgain.addEventListener(MouseEvent.CLICK, playmeAgain); 
var theScore:int = 0; 
var Round:uint = 1; 
score_txt.text = String(Round - 1); 
loseScreen.visible = false; 
theFinalScore.visible = false; 
playAgain.visible = false; 
copyrights.visible = false; 
var user_id:uint = 0; 
function loaderComplete(myEvent:Event)
    this.myParams=this.loaderInfo.parameters;
    this.myParamsLoaded=true;
    this.useParams();
function useParams()
    userid_txt.text=String(this.myParams.userid);
    user_id = Number(this.myParams.userid);
var myLoaderInfo=new Object();
myLoaderInfo.myParamsLoaded=false;
myLoaderInfo.loaderComplete=loaderComplete;
myLoaderInfo.useParams=useParams; 
this.loaderInfo.addEventListener(Event.COMPLETE, myLoaderInfo.loaderComplete);
function playmeAgain(event:MouseEvent):void
loseScreen.visible = false;
theFinalScore.visible = false;
playAgain.visible = false;
copyrights.visible = false;
Round = 1;
theScore = 0;
addEventListener(Event.ENTER_FRAME, trowEnemy);
        enemy.x = rand(0,stage.stageWidth - enemy.width);
        enemy.y = 0;
function boatMove(event:KeyboardEvent):void
    if(event.keyCode == Keyboard.RIGHT){
                    boat.x += 10;
                    if(boat.x > stage.stageWidth - boat.width)
                        boat.x = stage.stageWidth - boat.width;
    if(event.keyCode == Keyboard.LEFT){
                    boat.x -= 10;
                    if(boat.x < 0)
                        boat.x = 0;
addEventListener(Event.ENTER_FRAME, trowEnemy); 
function trowEnemy(event:Event):void
enemy.y += Round + 10;; 
    if(boat.hitTestObject(enemy)){
    // IF THE GAME ENDED
    loseScreen.visible = true;
    theFinalScore.text = String(Round - 1);
    theFinalScore.visible = true;
    playAgain.visible = true;
    copyrights.visible = true;
    removeEventListener(Event.ENTER_FRAME, trowEnemy);
    user_id = 71811;
var req:URLRequest = new URLRequest("z.php?id=" + user_id + "&mana=" + (Round - 1));
//var req:URLRequest = new URLRequest("http://izra.co.il/z.php");
var loader:URLLoader = new URLLoader();
loader.load(req);
    else
        if(enemy.y > stage.stageHeight){
        theScore += 1;
        enemy.x = rand(0,stage.stageWidth - enemy.width);
        enemy.y = 0;
        Round++;
score_txt.text = String(Round - 1);
theFinalScore.text = String(Round - 1);
// RANDOM NUMBERS 
function rand(min:uint, max:uint):uint
    var randomNumber:uint = Math.round(Math.random() * (max - min) + min);
    return randomNumber;