Pain Causing Volume as Child Actor, is it possible?

Hello. Is it possible to use Pain Causing Volume as Child Actor ?

I’ve just tried to do some thing like that:
https://i.imgur.com/bFjxCka.png

But damage still not applied to Character.

Maybe problem is in “Brush Builder”, but I don’t understand, how to configure it (by default for Pain Causing Volume is “Box”).

Does anybody have any idea?

Thanks!