Could be that the script integrates a code to locate a specific pointer or address , adding the address to it and all offsets as well, then when you'll activate the script using a hotkey or just by clicking it, that will detect the pointer added in the script, activating it.That will show the real value of what that is meant to show and you can manually add the value you desire or by modifying the pointer into the hotkeys to do what you want.
A script like that can be made in multiple ways using lua or not, using own code, using simple aob functions etc
I know how to make them in different ways, easier or very complicated...one example, i could say easy, is this below, made by me...is by my standards considered to be easy:
viewtopic.php?f=2&t=10934
See, you create a script that will always show the value of the pointer added ...sorry, i'm bad at explaining...english is not my primary language.
Download that table for HELLBOUND and take a look in the scripts.
Your girl,
V.