public void OnChangeIsOnARcamera()
 {
     if (!isStartGame)
     {
         bool isArCameraMark = checkMarkBtn.isOn;
         if (isArCameraMark) //ar camera on
         {
             checkMarkBtn.isOn = false;
             isArCameraOn      = true;
             //show message to user that he cant convert to ar camera while game
             arOnMessageContainer.SetActive(true);
         }
         else //ar camera off
         {
             isArCameraOn = false;
             Debug.Log("AR camera off (" + NetworkClient.users[NetworkClient.clientID].name + ")");
             LobbyState.cameraState = LobbyState.AR_OFF;
             NetworkClient.DestroyServerObject();
             arCamera.GetComponent <VuforiaBehaviour>().enabled = false;
             arCamera.GetComponent <Camera>().enabled           = false;
             gameWithArContainer.SetActive(false);
             gameWithoutArContainer.SetActive(true);
             serverObject = GameObject.FindGameObjectWithTag("serverObjects");//update to serverObject2
             NetworkClient.users[NetworkClient.clientID].socket.Emit("ARcameraOff");
             maincamera.enabled = true;
             stadium            = GameObject.FindGameObjectWithTag("stadium");
             Debug.Log("stadium=" + stadium.name);
             stadium.SetActive(true);
             scanUI.SetActive(false);
             menuUI.SetActive(true);
         }
     }
 }