So i'm making a no stamina regen challenge mod that puts in a flask of viridian tears, and I was able to get everything to work, animations vfx and all, but one thing that I cannot figure out how to make it get upgraded by sacred tears. In the video, I upgrade my flasks, and while the vanilla flasks upgrade as normal. my viridian tear flask stays at the unupgraded level. I'm assuming this has to do with the grace's talk script, but when i looked into it, I genuinely could not decipher what I was looking at, so I will also need help there lol
#How to make modded-in flasks actually get upgraded by a sacred tear
craggy hollow
scarlet rock
all the flask upgrade functionality is hardcoded to work with the vanilla hp and fp flasks specifically
it is indeed done in the grace esd but it only has commands for those
you would have to cook up your own system somehow
idk how doable that is
I mean hardcoded isn't really the right word cause even the vanilla game does stuff like manually replacing flask with the upgraded version and stuff
should in theory be possible to extend that functionality to cover the new flask type but yeah you'll have to work on understanding the esd which isn't very beginner friendly 
and even then there's stuff like bonfirelevel affecting the amount of flasks you get on rest which idk how you would extend that to green flask