Adobe AIR 2.0.2 / AS3 - Remove or change headers in NetStream

Hello,

I have problem with modify headers in NetConnection/NetStream functions (NetConnection.AddHeaders) doesn't work. How I can change headers when I usage NetStream.play(URL) ? At this moment any request from AIR enviroment is marked with Referer : app:/index.html. Maybe it's possible to disable referer header in AIR enviroment ?

Best Regards