OnActorOverlap in AnimEventGraphs?

Hi,
I am new to Unreal Engine, and I have question related to the use of the event OnActorOverlap.

I want a sequence to be fired in an animation blueprint (a simple AI driving an enemy character) when my player character enters a trigger box. However, my problem is, even though I can include OnActorOverlap in the level blueprint, it is just somehow not available in the animation blueprint. What am I missing?

Or is there a comparable event available under animation blueprint that I could use to the same effect?

Thanks a lot!