Media Server :: Can't To Access To Function Nc.onFCSubscribe?

i'm trying to use this code but i can't to access to function nc.onFCSubscribe. how can i do it? someone know about that?¿ the original site of the code is http://www.flashcomguru.com/index.cfm/2009/8/14/flvplayback-obtain-nc- reference
 
// listen to player events and kill manual connection once we're streaming    player.addEventListener("playing", playListener);    player.addEventListener("stateChange", stateListener);    player.addEventListener("ready", readyListener);       /* this is the hack: check once every frame if the NC has been defined inside the FLVPlayback component */       this.onEnterFrame = function() 

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