Problem with multiple Visibility Modifiers

I want to create a Visibilty Modifier (Circle) for up to 8 players (no shared vision) at the same time, for the same area, for a duration of 10 seconds. That´s no problem, BUT I can only destroy the (Last created Modifier), which means that with more than 1 player playing, all others keep the sight on the area.

How can I create a Sight modifier for multiple players and destroy all Modifiers later ?

Thx
Gozai

Create Visibility Modifyer variables and set them to Last Created Visibility Modifyer as needed when you create them.