I'm desperate now

I want to make a send score with PHP for my flash game. But I am completely confused on how to do this. I just don’t get it. I got it to load the PHP page and used the POST method with it. And I got it to set this on the PHP page, after the db connection:

$score=$_POST['score'];

And then I have where it sends your score and updates how much money you have for playing. BUT it doesn’t know what your score was. Oh, yeah, I’m currently using this method with action script:

onClipEvent (load) {
	loadVariables("http://setropets.com/worlds/GamiaIsland/gspong.php", _blank, "POST");
}

I’ve tried so many different ways to do this and none of them have worked that its insane. I’m really getting desperate. Can someone please help me??