Parametric MIDI Keyboard holder

I needed a place to store my new MIDI keyboard on my dorm. The only decent idea I had was to make a sort of hook to attach it to this wooden beam from the bed above. I thought someone else might find it useful, so I made it parametric.

You can tweak the model here: https://cad.onshape.com/documents/8f7cfbeca4827bda4200af19/w/e469dbed6a3075da6ac54088/e/5517963b6b168ed270ec748e?renderMode=0&uiState=662ec41661fa7422b1af6528 The name of each parameter and what it affects can be seen on the third image.

The STL included is for my keyboard and that specific wooden beam, It's just so I can make this thangs post.

This model is public domain.