I have had something like this just laying around, not sure if I should release it.
It has a "maxHealth" and a "addMaxHealth" event. They have 4 parameters for both.
MaxHealth > Health bool1 PerPlayer bool2
bool1 - If enabled, their health will fill right back up
bool2 - If enabled, it will add health of whoever is in the minigame (If not in the minigame it will use all players on the server) each player by that PerPlayer amount