Generic onModifyRecord for all tables

My company needs me to add some code every time the user tries to modify any of the fields in all the pages (for example in the customer card and in the item card). I want to know if there is a generic event to which i could subscribe to(like onModifyRecord ) that gets called before the modification of ANY OF THE FIELDS OF ALL THE PAGES in the whole NAV.

What i mean, is that i don't want to write code in every onModify function of a page. Instead, a more generic function is what we need.