Brian said: No. The GM will always see the bars. If you're trying to do API stuff, why not store the data on a character sheet/attributes? Because I want the API to access the bar values so when they change, it uses them. I suppose I could set up an Attribute of Max Hit Points on character sheet and do any math pointing to that. But it'd be more convenient to have it all tied to the token. That way I could easily have 2 ogres with different max hit points w/o a character sheet for both of them (or setting up multiple max hit points attributes).