How to control speed/direction of playback with midi fader

[FoundUnsound]

I am using an Akai APC40 mkii and have speed set to the horizontal slider and it goes from fully stopped on the left to crazy fast on the right and normal speed in the middle. I would like it to be fast on the right stopped in the middle and backwards fast to the left. Is that possible? I know you can change direction with a button, but I want it to be smooth so I can “scratch” the clips. Thanks for any input!

[Zoltán]

Adding curves to midi inputs is not possible in Resolume currently, but you might be able to do it with an external application like https://benjamin.kuperberg.fr/chataigne/en