Jebus christ ! This is exactly what I wanted ! I just implemented the script and it works just fine !
I will insert just your important lines in my scripts, because I already did some changes I want to keep to the Yanfly Battle engine, but I understand what you did, and I definitely needed help because I was nowhere near the solution searching by myself
Thank you so much for the quick and easy answer markA, of course I added you to the credits ^^
PS: if this is needed, a mod can tag this topic as "resolved" thanks, it's all good for me !