Death System

[Chuckle Brother]

Alright I'm making an AOS but I'm being held up because I want to make a good death system, in mine what I want is for it to display all the heroes who were in on the fighting, and show this up, now that I can do but I'm unsure of how I would make it empty out the variables that hold which heroes were involved, because if its just a timed event there can be glitching(namely emptying just before he dies). Any help would be appreciated