Multiplayer Script error

I am a novice at Unity, and was making a Javascript to make a direct connect lobby system for a game i'm working on. But keep getting 2 errors: No appropriate version of 'UnityEngine.Network.InitializeServer' for the argument list '(int, String)' was found.

and Cannot Convert 'int' to 'String'

how can i fix these?

 #pragma strict
 
 var remoteIPadress = "127.0.0.1";
 var remotePort = "25000";
 var listenPort = "25000";
 
 var useNAT = true;
 
 var myIP = "";
 var myPort = "";
 
 var MaxPlayer = 32;
 
 
 function OnConnectedToServer ()
 {
     
 }
 
 function OnDisconnectedToServer ()
 {
     
 }
 
 function OnGUI ()
 {
     if(Network.peerType == NetworkPeerType.Disconnected)
     {
         if(GUI.Button(Rect(5,5,60,30),"Connect"))
         {
             Network.useNat = useNAT;
             Network.Connect(remoteIPadress, remotePort);
         }
         if(GUI.Button(Rect(5, 40, 60, 30),"StartServer"))
         {
             Network.useNat = useNAT;
             Network.InitializeServer(MaxPlayer,listenPort);
         }
         
         remoteIPadress = GUI.TextField(Rect(5, 75, 60, 30),remoteIPadress);
         remotePort = parseInt(GUI.TextField(Rect(5, 10, 60, 30),remoteIPadress));
     
     }
     else
     {
         if(GUI.Button(Rect(5,5,60,30),"Disconnect"))
         {
             Network.Disconnect(200);
         }
     }
 }