Thanks for the answers but what a pitty.
I can't use the 3 addons in the same time because BMR don't have options to turn off coins transfert -.- (wich is made badly I must say).
For RulebasedInventory, I like the principe but how you want to dev on this small text input (and it's important because you can test your code via this input, okey it's a semi detail, but just why, and why I must install FCOIS when the vanilla game already lock items => +8 libraries, rip my game) :
I can take a look on the addons code but I will need to learn it just because people sometimes look like they don't have brain. I don't know how to say it, the idea is good, there is good things on the addon, then you see they made something like sabotage, really non-sence...