Photon and the tutorial on cjrgaming.com

Hello, first my english is not so good, but I want to ask you something.

And I have a problem with Photon & Unity3D. I'm doing the tutorial on cjrgaming.com (http://www.cjrgaming.com/node/17) but I have a trailer there. I created the four classes than I put the dll into Unity. However, now I get error messages still useable as: IGameState.cs (9.41): error CS0246: The type or namespace name 'event code' could not be found. Are you missing a using directive or an assembly reference? and so on.

Here again IGameState.cs:

 using System;
 using System.Collections;
 using AuroraCommon;
 using ExitGames.Client.Photon;
 
 public interface IGameState
 {
     GameState State { get; }
 
     void OnEventReceive(Game gameLogic, EventCode eventCode, Hashtable eventData);
 
     void OnOperationReturn(Game gameLogic, OperationCode operationCode, int returnCode, Hashtable returnValues);
 
     void OnPeerStatusCallback(Game gameLogic, StatusCode returnCode);
 
     void OnUpdate(Game gameLogic);
 
     void SendOperation(Game gameLogic, OperationCode operationCode, Hashtable parameter, bool sendReliable, byte channelId);
 }

And here once a screen:

thank you:)!