IK Arm Punch :: What am I missing??

I feel like I have tried everything to get this to work. What I’m trying to make is the punching IK system shown in the Content Examples . Here is a YT video on what I want to make. https://www.youtube.com/watch?v=NGaGXSoz0CI

In my scene, I have one arm hitting a wall. I have the trace, I have the AnimBP, but I don’t have anything close to what I’d like to achieve. What am I missing? The ball in my scene either goes through the wall, or it hits the wall and doesn’t let go. Below is a Github link to my project.

Any help will be greatly appreciated!!

https://github.com/NfrancisJ/UE4_IKArm