Multiplayer tutorial help

I am using the muliplayer tutorial, and the first code is bringing up some odd errors.

Assets/connectionGUI.js(17,41): BCW0012: WARNING: ‘UnityEngine.Network.useNat’ is obsolete. No longer needed. This is now explicitly set in the InitializeServer function call. It is implicitly set when calling Connect depending on if an IP/port combination is used (useNat=false) or a GUID is used(useNat=true).

Assets/connectionGUI.js(23,41): BCW0012: WARNING: ‘UnityEngine.Network.useNat’ is obsolete. No longer needed. This is now explicitly set in the InitializeServer function call. It is implicitly set when calling Connect depending on if an IP/port combination is used (useNat=false) or a GUID is used(useNat=true).

Assets/connectionGUI.js(25,41): BCW0012: WARNING: ‘UnityEngine.Network.InitializeServer(int, int)’ is obsolete. Use the IntializeServer(connections, listenPort, useNat) function instead

All of these refer to this line:

Network.InitializeServer(32, listenPort);

I have no idea what to do. Any help?

Now you can refer [here][1]. The new way to config use/no use NAT for server.

function LaunchServer () {
    Network.incomingPassword = "HolyMoly";
    var useNat = !Network.HavePublicAddress();
    Network.InitializeServer(32, 25000, useNat);
}

So just remove those line

Network.useNat = useNAT;

and add boolean param to Initial method.
[1]: Unity - Scripting API: Network.InitializeServer