How to load online level

Hello

I'm working on a multiplayer game and what i'd like to know is how to get the index level of the level that being created by the server, I have a player that creates the game and host it, for that he must choose a level to load, but when another player wants to login to the game, the level does not load.

Here's the part when a player create a game

 if ( GUI.Button(ResizeGUI(new Rect(1000.0f,400f,400.0f,60.0f)), "Lunch Server", ButtonStyle))
             {
             int displayLevel=selectedLevel+1;
             Application.LoadLevel(selectedLevel);
             Network.InitializeSecurity();
             Network.InitializeServer(int.Parse("1"), int.Parse(port), !Network.HavePublicAddress());
             MasterServer.RegisterHost (gameName, serverName+"( Level "+displayLevel+" )");
             Debug.Log(MasterServer.ipAddress);
 }

here's when a player join a game

 foreach(HostData c in data)
             {
                Debug.Log(c.ip);
                GUILayout.BeginArea(ResizeGUI(new Rect (700, 400, 400, 400)),LabelStyle);
                GUILayout.BeginHorizontal ();
                GUILayout.Box (c.gameName);
                if(GUILayout.Button("Join"))
                {
                   Network.Connect (c);
                   
                   Debug.Log("adresse ip"+c.ip);
                   Debug.Log("adresse use nat"+c.useNat);
             
                }
                GUILayout.EndHorizontal ();
                GUILayout.EndArea();
             }

Does anyone know how I can retrieve the index level once the server is created or any other solution to remedy to this?

Thank you