Problem with RPC attribute.

Hi! I have a problem, and i cant solve t$$anonymous$$s :(

Problem:

RPC call failed because the function 'SendMessage' in 'Component' does not have the RPC attribute. You need to add the RPC attribute in front of the function declaration UnityEngine.NetworkView:RPC(String, RPCMode, Object[]) chat:windowFunc(Int32) (at Assets/Server/chat.cs:29) UnityEngine.GUI:CallWindowDelegate(WindowFunction, Int32, GUISkin, Int32, Single, Single, GUIStyle)

Code:

using UnityEngine; using System.Collections;

public class chat : MonoBehaviour {

 private Rect windowRect = new Rect (200, 200, 300, 400);
 private string messBox = "", messagetoSend = "";
 public NetworkView nView;
 
 void Start()
 {
     nView = GetComponent<NetworkView>();
 }
 
 private void OnGUI()
 {
     windowRect = GUI.Window (1, windowRect, windowFunc, "Chat");
 }
 
 private void windowFunc(int id)
 {
     GUILayout.Box (messBox, GUILayout.Height (350));
     
     GUILayout.BeginHorizontal ();
     messagetoSend = GUILayout.TextField (messagetoSend);
     if (GUILayout.Button("Send", GUILayout.Width(75)))
     {
         nView.RPC("SendMessage", RPCMode.All, messagetoSend);
         //NetworkView.RPC("SendMessage", RPCMode.All, messagetoSend + "\n");
     }
     GUILayout.EndHorizontal();
     //pour bouger la fenettre
     GUI.DragWindow (new Rect (0, 0, Screen.width, Screen.height));
 }
 [RPC]
 private void SendMessage(string mess)
 {
     messBox += mess;
 }

}