About FMS2 Connection

Hi all

i want to publish microphone audio to the server but failed. stream always show "live" on fms2_console, and no flv is published on server.
this is my client-script:

Code:
import flash.net.*;
import flash.events.*;
stop();

NetConnection.defaultObjectEncoding = ObjectEncoding.AMF0;
var nc:NetConnection = new NetConnection();
var ns:NetStream;
function ncHandler(eve:NetStatusEvent):void
{
trace(eve.info.code);
if(eve.info.code == "NetConnection.Connect.Success")
{
ns = new NetStream(nc);
ns.addEventListener(NetStatusEvent.NET_STATUS, nsHandler);
ns.attachAudio(Microphone.getMicrophone());
ns.publish("blackcamera", "record");
}
}

function nsHandler(eve:NetStatusEvent):void
{
trace(eve.info.code)
}


nc.addEventListener(NetStatusEvent.NET_STATUS, ncHandler);
nc.connect("rtmp://localhost/myApplication");
then, i create a folder called "myApplication" on server root but not create main.asc(i don't think it's necessary).

i run the client and trace "NetConnection.Connect.Success
" and "NetStream.Publish.Start". the server works well but the stream' type always "live", and the bandwidth shows nothing.

thanks