Referencing one char sheet field in another

In the (say, 5e) character sheet, is it possible to reference one field in another? For instance, setting the @class_resource_max for Bardic Inspiration to @charisma_mod would allow it to level up with the ability modifier. Or @hit_dice_max = @level feels useful. Bonus question: Is there a way to reset appropriate current resources to their max with a short/long rest macro?

You should be able to enter stat references, but rememebr to use the curly brackets: It's @{class_resource_max} not @class_resource_max. It's possible the box for the stat is formatted as a number, and you won't be able to enter text (like "@") which would stop this working. But if it's an ordinary text box, you can enter stat references like these. Bonus Question: Macros cant alter values, so if the sheet doesn't include a way to reset resoures to max you have to do it manually. (Pro uses can do this with an API script, of course, but that doesn't help you.)

So no in both cases (unless I upgrade for the 2nd thing). Okay, that's good to know. Thank you. :)