Putting a limit on numbers

I am trying to make a sumo wrestling game where you have to push a guy off a platform, and you can use power moves but it takes up a stamina bar, and i will make it regen over time but i dont want the stamina to go past 200 or below 0 but I ant find a way to limit it
Game: http://flowlab.io/game/play/1276897

you could make the Label say 200 and turn the switch off until damaged

Also just use greater than 190 and Less than 20,
Greater than or equal to could make it stop early.