Is there a way to subtract an amount from an attribute when a checkbox in the character sheet is clicked?

I am making a character sheet for a game and there is this system called XP and ideally I would want some way so when a player clicks on check boxes i have set up in the character sheet, some amount will be subtracted from the XP attribute. I looked just to have this be something on the sheet itself or a macro but it seems this can only be done with api scripts. if you have some way i can do it without the API that would be the best, but all help is appriciated

If the interaction is only on the sheet, then you can do it with sheetworkers.

Seems like you could use a radio with various values that could subtract from another attribute.  basic example -10:<input name="attr_xp-pen" type="radio" value="10"> -20:<input name="attr_xp-pen" type="radio" value="20"> -30:<input name="attr_xp-pen" type="radio" value="30"> <br> XP:<input name="attr_xp" type="text" value="0"> Current XP:<input name="attr_xp-current" value="(@{xp}-@{xp-pen})" disabled>