Multiplayer Chat Script (Problem : mixed names)

Hello :)

I have problem with chat script. I watched tutorial and I have same script as on the tutorial. But I have problem.

The problem is it won't show the right name. Exaple. I start the game. Enter name and when I start game the name is not showed. Next time I start the game and ENTER DIFFERENT name and when I run the game it showes me the name I typed in from last time I run the game. I hope you get it :/

Here is the full script :/ (the guy from tutorial doesn't respon so I ask you for help ok ! )

using UnityEngine; using System.Collections;

public class Chat2 : MonoBehaviour { bool usingChat = false; bool showChat = false;

 string inputField = "";


 Vector2 scrollposition;
 int width = 500;
 int height = 100;
 string playerName;
 float lastUnfocusTime = 0;
 Rect window;


 ArrayList playerList = new ArrayList();
 class PlayerNode
 {
     
     public string playerName;
       public NetworkPlayer player;
 }

 ArrayList chatEntries = new ArrayList();
 class ChatEntry
 {
     public string name = "";
     public string text = "";
 }
 
 // Use this for initialization
 void Start ()
 {
     window = new Rect(Screen.width / 2 - width / 2, Screen.height - height + 5, width, height);
     playerName = PlayerPrefs.GetString("playerName", "");

     if (playerName == "") playerName = "RandomName" + Random.Range(1, 999);
     if (playerName == "playerName") playerName = "playerName";
 }

 void OnConnectedToServer()
 {
     ShowChatWindow();
     networkView.RPC("TellServerOurName", RPCMode.Server, playerName);
     addGameChatMessage(playerName + "has just joined the chat!");
 }

 void OnServerInitialized()
 {
     ShowChatWindow();
     PlayerNode newEntry = new PlayerNode();
     newEntry.playerName = playerName;
     newEntry.player = Network.player;
     playerList.Add(newEntry);
     addGameChatMessage(playerName + "has just joined the chat!");
 }
 PlayerNode GetPlayerNode(NetworkPlayer netPlay)
 {
     foreach(PlayerNode entry in playerList)
     {
         if (entry.player == netPlay)
             return entry;
     }
     Debug.LogError("GetPlayerNode: Requested a playernode of non-existing player!");
     return null;
 }
 void OnPlayerDisconnected(NetworkPlayer netPlayer)
 {
     addGameChatMessage("A Player has disconnected");
     playerList.Remove(GetPlayerNode(netPlayer));


 }
 void OnDisconnectedFromServer()
 {
     CloseChatWindow();
 }
 

[RPC] void TellServerOurName(string name, NetworkMessageInfo info) { PlayerNode newEntry = new PlayerNode(); newEntry.playerName = playerName; newEntry.player = Network.player; playerList.Add(newEntry); addGameChatMessage(playerName + " has just joined the chat!");

 }
 void CloseChatWindow()
 {
     showChat = false;
     inputField = "";
     chatEntries = new ArrayList();


 }
 void ShowChatWindow()
 {
     showChat = true;
     inputField = "";
     chatEntries = new ArrayList();
 }
 
 void OnGUI()
 {
     if(!showChat) return;

     if(Event.current.type == EventType.keyDown && Event.current.character == '\n' & inputField.Length <= 0)
     {
         if(lastUnfocusTime + .25f < Time.time)
         {
             usingChat = true;
             GUI.FocusWindow(5);
             GUI.FocusControl("Chat input field");
         }
     }

 window = GUI.Window(5, window, GlobalChatWindow, "");
 }

 void GlobalChatWindow(int id)
 {
     GUILayout.BeginVertical();
     GUILayout.Space(10);
     GUILayout.EndVertical();

     scrollposition = GUILayout.BeginScrollView(scrollposition);

     foreach (ChatEntry entry in chatEntries)
     {
         GUILayout.BeginHorizontal();
         if (entry.name == " - ")
             GUILayout.Label(entry.name + entry.text);

         GUILayout.EndHorizontal();
         GUILayout.Space(2);
     }

     GUILayout.EndScrollView();

     if(Event.current.type == EventType.keyDown && Event.current.character == '\n' & inputField.Length > 0)
         HitEnter(inputField);
     GUI.SetNextControlName("Chat input field");
        inputField = GUILayout.TextField(inputField);

     if (Input.GetKeyDown("mouse 0"))
     {
             if( usingChat)
             {
                     usingChat = false;
                 GUI.UnfocusWindow();
                 lastUnfocusTime = Time.time;
             }
     }
   }   
 void HitEnter(string msg)
 {
         msg = msg.Replace('\n', ' ');
         networkView.RPC("ApplayGlobalChatTexT", RPCMode.All, playerName, msg);
 }
 [RPC]
 void ApplayGlobalChatText(string name, string msg)
 {
         ChatEntry entry = new ChatEntry();
     entry.name = name;
     entry.text = msg;

     chatEntries.Add(entry);

     if(chatEntries.Count > 4)
         chatEntries.RemoveAt(0);

     scrollposition.y = 1000000;
     inputField = "";
 }
 void addGameChatMessage(string str)
 {
     ApplayGlobalChatText(" - ", str);
     if(Network.connections.Length > 0)
         networkView.RPC("ApplayGlobalChatTexT", RPCMode.Others, " - ", str);
 }

}

Also I figure it out that this line is responsible for displaying the name

void Start () { window = new Rect(Screen.width / 2 - width / 2, Screen.height - height + 5, width, height); playerName = PlayerPrefs.GetString("playerName", "");

 if (playerName == "") playerName = "RandomName" + Random.Range(1, 999);
 if (playerName == "playerName") playerName = "playerName";

}

I hope you understand my problem and that you can help me. :D