How can i make the very simple Fall damage based on Z velocity of the character? help

I was trying to follow some easy tutorials i found out here on this forum section but it was way too hard to follow them since i can’t do a multi-branch-switcher or w/e with Event Tick.

Just take a look on this ss of my blueprint built in based event tick

Can someone help me with this fall damage system because i’m getting made, too many functions deleted and not working by me.