UE4 Trail in Matinee

hello, I’m animator and I want to sell my asset on marketplace.

I want to see my trail for sword.

I watched the linked video. (Intro to Cascade: Creating an AnimTrail Emitter | 09 | v4.2 Tutorial Series | Unreal Engine - YouTube)

So, I was done. I could see my trail on sword. but, on Matinee, I couldn’t see my trail.

I think it need level blueprint. but i’m just beginner.

so, please help me.;D