Multiplayer games

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When my clients are online at the same time,PhotonNetWork.RasieEvent can sync. But if I have a new player join in ,the cache in the room can't sync to this player. I don't know why,,,,Can someone help me?Thans a lot.... the function that i used 'PhotonNetWork.RasieEvent' and it's callback function is OnEvent(EventData photonEvent). I guess , the reason is the code that I customed is not sync to the sever..