In that case i think you can use "For Each" action, for change all object instances variable in one time
Thanks NN81. But could that work in my case ? Because every instance have a special variable number.
Exemple :
UID 25 = variable 2
UID 32 = variable 5
UID 34 = variable 4 etc...
If you destroy the sprite and create it again then it will be created with the default values. That's a way of refreshing it if it's an applicable method to your game.
Thanks plinkie. I thought about that, but in my case the instances must stay in the same position (no reset x and y)
Anyway... Perhaps I may have to find another way to do what I want.