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Pass options from Main Menu to Game Mode

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    Pass options from Main Menu to Game Mode

    I have created a Main Menu that can run in desktop or VR mode and allows the user to choose which way to run the game.
    When I select desktop or VR mode, I load a new level want the Game Mode to spawn the appropriate pawn.
    I have a post login event in game mode that spawns and possesses the pawns but my problem is telling the game mode which to spawn.
    I have tried setting a boolean in the game mode from the Main Menu widget 'bIsVR' to true or false, but it seems that when ran from the client this isn't possible.
    I also tried saving this boolean to the GameInstance, but it looks like the GameInstance only exists on the clients and not the server.
    I then tried saving this value to a game save, but again, the game mode is running on the server and doesnt load the game save from the client
    I then tried setting level options open "levelname?vr=true" but again, this wasn't set from the client side.

    What is the best way of going about this? I can't seem to get any option to work correctly.



    Since ancient times, Unreal has a "Options String" property in game modes that nowadays very few seem to know about:
    | Savior | USQLite | FSM | Object Pool | Sound Occlusion | Property Transfer | Magic Nodes | MORE |


      Thanks for the reply.
      I actually tried the options string, but this didn't seem to work from the client side.
      I used it on the open command when joining the server. Eg 'open vr=true'