2D paper flipbook not showing when called

Dear experts,

I have a tank missile in a 2D game. I fire the missile and when it explodes after 3 seconds it gets destroyed. I do that with C++.

Now I have a blueprint that should show a flipbook explosion. But it does not show.
This is my blueprint:

I have a PrintString at the end for debugging purposes. When my missile is destroyed it prints “aarg”, but it does not show my “Explosion” Flipbook.
What am I doing wrong?
When I use “Event BeginPlay” the “Explosion” Flipbook is shown as soon as I fire the missile. But when I use “Event Destroyed” the “Explosion” Flipbook is not showing.

Thank you for your help,