HELP: Creating a Shadow Matte & Reflection Pass renders in Unreal?

I’ve never actually tried this before so I’m not even sure it’s possible.

I found this tutorial from 2016 which sounds like it could possibly be used to do something like this but I’m not sure. I think I managed to recreate the Blueprint and materials from the tutorial but I’m not certain i did so correctly. There are no errors when I compile but that doesn’t mean its’s correct or will still work now.

Has anyone tried this sort of thing?

Any advice or suggestions would be greatly appreciated.

Following the tutorial here’s how I set up the Blue Print and Material