I'm trying to deal with having multiple orthogonal submachines that process one event containing data. I have a contrived example that hopefully conveys the issue. Suppose I am hoping to create a state machine "Game2D" with a set of orthogonal submachines that guard certain transitions based on each other, and I would like some events to be processed by multiple submachines. Parent Machine: Game2D Event: CharacterStatus - contains character position and velocity Submachines: IsMoving - changes state based on CharacterStatus CorrectPosition - updates position based on CharacterStatus CharacterStatusUpToDate - times out to an error state if CharacterStatus hasn't been received for a while EnemyAlive - doesn't process CharacterStatus RunSystem - guards some transitions based on the state of IsMoving Since some, but not all of these submachines needs the "CharacterStatus" event, what is the best way to make sure they all get it when I call Game2D.process_event(CharacterStatus)? I want to be able to reuse these pieces, and keep things as simple as possible. Does this seem like an ok approach? Should I simply have a state "UpdateCharacterStatus" that directly updates each of these objects then creates an event to transition away, or something else entirely? Cheers! Andrew Hundt