My Animation montage not showing in game

Hello all, I had a problem with the animation montage not showing in-game when click. Them both just standing still like no action is taken instead of stealth the opponent. For a few sec, the enemies disappear which is dead but didn’t show. This carries me for almost 3 days now and I can’t found any solution to it. pls, do help me and give me an assist. I really wanted to work. I follow one of the videos on youtube:

Here some pictures of my takedown:
First is main character events:

This is the AI events: