Why I can't spawn actors in notifystate begin?

I tried to deal damage in notifystate using trace in tick, but failed because of multiple notifystate instance being created and dealing multiple damages.

So I came out another way to implement this thing which I make notifystate spawn an actor to deal damage using overlapping in notifystate tick. But unexpactly it didn’t work because I can’t find any Spawn Actor node in notifystate. Why?
Please kindly help me.