Помогите ошибка в юнити Assets\Scenes\MenuManager.cs(16,21): error CS1061: 'RoomOptions' does not contain.....

Assets\Scenes\MenuManager.cs(16,21): error CS1061: 'RoomOptions' does not contain a definition for 'MaxPlayer' and no accessible extension method 'MaxPlayer' accepting a first argument of type 'RoomOptions' could be found (are you missing a using directive or an assembly reference?)



using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using Photon.Pun;
using Photon.Realtime;

public class MenuManager : MonoBehaviourPunCallbacks
{
public InputField createInput;
public InputField joinInput;

public void CreateRoom()
{
RoomOptions roomOptions = new RoomOptions();
roomOptions.MaxPlayer = 4;
PhotonNetwork.CreateRoom(createInput.text, roomOptions);
}

public void JoinRoom()
{
PhotonNetwork.JoinRoom(joinInput.text);
}

public override void OnJoinedRoom()
{
PhotonNetwork.LoadLevel("Game");
}
}