Particles OnComponent Begin Overlap not working

Do you have collision enabled on the object? and a Collision box/sphere/cylinder for it to interact with? if not, it won’t fire.

I notice when I Create an event OnComponent Begin Overlap for a certain particle system , nothing happend at all unless I Do the same script using Trigger box

did I missed something on this ?

which object, the Mesh blueprint itself or the BluePrint particle system ?