Destroy Actor doesn't work on looping particles?

Got a nice particle system which is water for a shower. Looking and working pretty nice.

Thing is that i spawn the emitter on demand - which is fine. But when i destroy all emitters with a for-each loop through all actors of class emitter it keeps emitting. Is that a bug or a misunderstanding on my site?

Nevermind - i used “Destroy object” after promoting the spawned showers to variables instead of using “Destroy Actor”.