case "sit":
            TargetRoomUser = Session.GetHabbo().CurrentRoom.GetRoomUserByHabbo(Session.GetHabbo().Username);

            if (TargetRoomUser.Statusses.ContainsKey("sit") == false)
            {
                // Checks body position (ensures it is not diagonal).
                // @notes:
                // - Do not check head position as it swivels when Habbos talk in the room.
                if ((TargetRoomUser.RotBody % 2) == 0)
                {
                    // Sets seated status.
                    TargetRoomUser.Statusses.Add("sit", "1.0");

                    // Puts them on the ground level of the room. Comment out to have them 1 space above the ground.
                    TargetRoomUser.Z = -0.5;
                }

                // Sends update to Habbo in-game.
                if (TargetRoomUser.Statusses.ContainsKey("sit") == true)
                {
                    // Updates Habbo.
                    BaalEnvironment.GetGame().GetRoomManager().GetRoom(Session.GetHabbo().CurrentRoomId).UpdateUserStatus(TargetRoomUser, true);

                    Session.SendNotif("You are now seated.");
                }
                else
                {
                    Session.SendNotif("You cannot be seated diagonally.");
                }
            }
            else
            {
                Session.SendNotif("You are already seated! Relax.");
            }





---------------------------------------------------------
error:
No overload for method 'UpdateUserStatus' takes 2 arguments

The error says the problem right there. So add to your method 'UpdateUserStatus' this:

Code:
something UpdateUserStatus(var var, bool Force = false)
Then add this to the method itself:

(make sure to change the 'updatestatus' to the variable you use.

Code:
if (Force == true)
{
updatestatus = true;
}
else
{
... (everything else in the original method)
}
Then it should work fine.