Final Fantasy Hacktics

I thought that custom formulas would appear as usual but looks like Link's Fire/Ice/Light Arrows (Journey of the 5) also have a custom damage formula (blank). I'll search for the ASM then, thanks 

I'm better at using the programs now, but I still haven't figured out what happens here:

This one's Envenom, from the Enchanter in Celdia Patch (which is a weapon-based skill)


And then this is Hex (from the Enchanter as well)

Comparing the Enchanter skills in the game, it looks like the difference between the Y variables changes the skill damage in about 10 points (this value probably depends on the weapon I'm using).


Finally, this is the damage formula for the weapon I'm using (Pisces vs Pisces situation - no Zodiac effect):
A basic attack causes 64 damage.
Envenom deals 40 damage.
Hex damage is 50.

At first, I thought that the skill would just use the weapon formula and that's it, but looks like the Y variable is changing the result quite a lot.
And now, after all the dumb stuff:
Is there a way to retrieve this '(blank)' value?   

I was kinda lost using FFTPatcher, since all the skills are named after the original game, even though they were completely edited by the modders. Using FFTacText I was able to understand stuff properly. Thanks!

So, like everyone here, I love playing FFT mods, but it's kinda rare to find mods with something like a spreadsheet listing skill and weapon formulas, which is very sad for me since I really love to make calculations and stuff while I'm playing.
On to the question: is there a convenient way to extract the formulas from mod patches? My knowledge when it comes to modding is close to 0.
Thanks in advance!