Leveling up

Hey, can anyone tell me how to level up a player and use green packs? Like explain it to me because idk lol

Train. add condition with green pack. train some more. be sure to have red packs for when he gets injured. Keep training til you reach level desired or you run out of packs. (it you want to calculate how many ahead of time, you need to know the rate at which your player loses condition and gains skill) it's simple, but that's all... :D