Hello dear people of roll20, i hope you have a good day on those panic-filled times. I make my first post since i first came to roll20 because recently, i've update my subscription to a pro one in attempt to make my own Character Sheet for my game. I'm using a Homebrew game, based (at first) on Basic RPG. Here's the deal, i can handle HTML and CSS (had to remember what i knew from, like, 10 years ago), but to give the most confort to my players, i'm trying to automate things a little. First thing first, i have some value that gets into a table and give another value. Here some example : 1 - If your Sta (stamina) is less than 12, you regenerate 1HP every 2 days, if it's between 12 and 16, you get 1hp every day, and if it's above 17 you get 2hp every day. 2 - If the sum of your Str (strenght) and Siz (Size) is less than 19, you get no Attack Bonus. If it's between 19 and 21, it's 1 Attack Bonus, 22 and 24, 2 and above 25 it's 3. So i've got those attributes : Sta, Str, Siz, and for the secondaries : Hp_regen, Attack_bonus, and i've been wanting to change their value depending of one another, and be able to put them in display on my Sheet, as well as using those values (especially Attack_bonus) on my weapons roll. Thing is, i want those secondaries to be able to update themselves whenever Sta, Str and Siz changes. I get that i need to use the Sheet Worker (even tho i don't really understand how it works) and use getAttrs and setAttrs, but i have no idea how it works. So i'm requesting help, please, to solve my problem. I hope you'll be able to enlighten me, and that you have fun with your games ^^ (btw, if someone who knows how to do that is french, don't bother writting in english, i'm french myself x])