How i can activate sametime many same actors?

Hello, right now i have problem. I want many objects(actors) be destroyed sametime. So i have 2 actors. One of them is trigger wich trigger seconds actor, but i have added many same actors to game and only trigger and one other actor be destroyed. This is very hard to explain. So i just give you example and my blueprints.

I have 3 ball in same room. BallA have trigger and when i touch it BallB and BallC should be also removed.

105757-vanishingobject.png

I think VanishingObject does not have any problem, because i think the problem is that when i add same actor again ingame it changes it name and doesn’t trigger. Can anyone explain how do i fix this?
Thanks