Audio capture using AMS Standard

I'm trying to capture audio from a mic and save on an AMS server running AMS Standard.
I can make a connection without problems with "rtmp://server_name/live", but when I try to start recording audio with
mic = Microphone.getMicrophone();
mic.rate = 44;
mic.gain = 100;
mic.setSilenceLevel(0);
try {
        nsPublish = new NetStream(nc);
        nsPublish.addEventListener(NetStatusEvent.NET_STATUS, netStatus);
        nsPublish.attachAudio(mic);
        nsPublish.publish("recordTest", "record");
   } catch(error:Error) {
       setStatus(error.toString());
       return;
I get the following error: Application doesn't have permissions for server-side record/append of streams; access denied to stream recordTest.
Can anyone tell me why and how to fix it?
Thank you!

Ah, yes, that works! Thank you.
A follow-up question: When audio capture is stopped, how can the client program find out when all the audio data has been written to a file on the server. The client needs to know this to perform subsequent operations on the audio file.

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