How do I make a procedure occur when the player takes damage?

I've been trying many things and all of them failed, I want to add a mechanic that makes it so there is a chance that the player gains a status effect whenever he takes damage, however I cannot find any global procedure of anything else that detects whenever the player takes damage. I have tried to make a procedure where when any entity takes damage they gain a status effect, but that crashed my game multiple times so It cannot be that. Any help, please?