Adding support for custom Input Device in Mapping Context

I’m making a game project in school and I’ve just spent about a week making a Logitech wheel work in our game with c++ and it works ( Without Windows Raw Input because it’s not supported on our target platform ).

What I currently have is a struct with values from the Input device which we can use but I would like to add a new tab in InputMappingContext like in the image bellow and recognize the values in the struct being something other than 0 as being a button press.

( Made with paint )
WantedResult.

Just in case what I wrote makes no sense I’ll write the question again. Can I have a float variable as a custom button in the InputMappingContext that can be used to trigger InputActions.

Any help or links to relevant information would be greatly appreciated.