FLVPlayback with parameters

Hi!

So, this works:


import fl.video.*;
var flv:FLVPlayback = new FLVPlayback();
flv.load('videostream.php');

However, if I try to pass a GET variable:


import fl.video.*;
var flv:FLVPlayback = new FLVPlayback();
flv.load('videostream.php?id=5');

It stops working. Why?