My Voice Chat Script Don't work

Hi, i'd like make a voice chat script for my online fps game but i don't have any ideas how can i make it i searched in this site and found some solutions but it didn't work. (http://answers.unity3d.com/questions/655062/multiplayer-voice-chat.html) my code :

 #pragma strict
 
 
 
 function Start () {
 InvokeRepeating ("OnConnectedToServer", 1, 1);
 InvokeRepeating ("PlayMicrophone", 1, 1);
 
 }
 
 function Update () {
 
 }
 @RPC
  
 function PlayMicrophone()
  {
      audio.clip = Microphone.Start("", true, 100, 44100);
          audio.loop = true;
          while (!(Microphone.GetPosition("") > 0)){}
          audio.Play();
  }
  function OnConnectedToServer()
  {
  networkView.RPC("PlayMicrophone", RPCMode.Others);
  }