He’s asking for help to implement damage to an enemy character/pawn
There are many ways to do melee damage, so US choosing one way for you is not the best.
You’ll need to figure out which you need for your game.
I can see by the video you are just attaching the sword mesh to your character at the beginning/start up of the map, so I have a perfect tutorial for you right Here
Go watch this tutorial series and by the time you’re done, you will know what you need to know!
I say this because that’s how I was able to get these results.