if your using a timer or delay to countdown time till a character is destroyed then you are going to want to put the timer logic on that character. you need to do this because everytime the event is triggered the values will be overwritten, but if they are on the character itself it will persist. so basically when this event is called just have it call an event on the character.
It looks like your trying to make a pain causing volume here. if thats the case then just just get all overlapping actors and use the apply damage node.ill post an example below. basically at a set interval based on a timer you get all overlapping actors and for each apply damage. then on the characters have an event any damage which decreases the health value and also checks the health value to see is the character should die.
