Public starting without reason

Hi guys I have a problem with my script.I made a script that if my player loads a level then The public bool will become true and make a gui button but i have no idea why when i put this script it automaticly put the public to true.Please help.thanks

     public Player MyPlayer;
     public GameObject SpawnPlayer;
     public bool MatchStarted;
     //public bool MatchLoaded;
     
     // Use this for initialization
     void Start () {
         Instance = this;
         DontDestroyOnLoad(gameObject);
     }
     
     // Update is called once per frame
     void Update () {
         PlayerName = PlayerPrefs.GetString("PlayerName");
         
     }
     
     public void StartServer(string ServerName, int MaxPlayers)
     {
         Network.InitializeSecurity();
         Network.InitializeServer (MaxPlayers, 25565, true);
         MasterServer.RegisterHost("Tut", ServerName, "");
         
         Debug.Log("Started Server");
     }
     void OnPlayerConnected(NetworkPlayer id)
     {
         //networkView.RPC ("Server_PlayerJoined", RPCMode.Server, PlayerName, id);
         foreach (Player pl in PlayerList)
         {
             networkView.RPC("Client_PlayerJoined",id,pl.PlayerName, pl.OnlinePlayer);
         }
     }
     
     void OnServerInitialized()
     {
         Server_PlayerJoined (PlayerName, Network.player);
     }
     
     void OnConnectedToServer()
     {
         networkView.RPC ("Server_PlayerJoined", RPCMode.Server, PlayerName, Network.player);
     }
 
     void OnPlayerDisconnected(NetworkPlayer id)
     {
         networkView.RPC ("RemovePlayer", RPCMode.All, id);
         Network.RemoveRPCs(id);
     }
 
     void OnDisconnectedFromServer(NetworkDisconnection info)
     {
         PlayerList.Clear ();
     }
 
     [RPC]
     public void Server_PlayerJoined(string Username,NetworkPlayer id)
     {
         networkView.RPC("Client_PlayerJoined", RPCMode.All,PlayerName, id);
     }
     
     [RPC]
     public void Client_PlayerJoined(string Username,NetworkPlayer id)
     {
         Player temp = new Player();
         temp.PlayerName = Username;
         temp.OnlinePlayer = id;
         PlayerList.Add(temp);
         if (Network.player == id)
         {
             MyPlayer = temp;
             Network.Instantiate(SpawnPlayer,Vector3.zero,Quaternion.identity,0);
 
         }
     }
 
     [RPC]
     public void RemovePlayer(NetworkPlayer id)
     {
         Player temp = new Player ();
         foreach(Player pl in PlayerList)
         {
             if(pl.OnlinePlayer == id)
             {
                 temp = pl;
             }
         }
         if(temp !=null)
         {
             PlayerList.Remove (temp);
         }
     }
     [RPC]
     public void LoadLevel()
     {
         Application.LoadLevel (1);
         MatchStarted = true;
     }
 
     void OnGUI()
     {
         if(MatchStarted = true)
             {
             if(GUI.Button(new Rect(0,0,50,20),"Spawn"))
             {
             MyPlayer.Manager.networkView.RPC("Spawn",RPCMode.All);
             }
         }
     }
     
     [System.Serializable]
     public class Player{
     public string PlayerName;
     public NetworkPlayer OnlinePlayer;
     public float Health = 100;
     public Character Manager;
     }
 }