Sub Phatty - How to put FilterCutoff-CC relative to the FilterCutoff in program!?

Hallo,
i am figuring out how to control my Sub Phatty with Ableton LIve 10.

Problem: My Sub- FCOff stay´s allways at the position i put in LAST! via CC.

but the CC i put in should be added RELATIVE to the aktual FilterCutoff-Position.

Here you can listen what i try to achieve:
https://youtu.be/4XjJV8hLuXY?t=286

Any help aprechiated, THX

ps: Sorry, my knowledge is limited so is my english.

As from what I know MIDI is a relative simple protocol. So if you turn a knob there will be always send an ABSOLUTE value and this value is applied directly to the destination. For calculating a difference there should be some intelligence sitting in between the chain knowing the old value and calculating the difference. Unfortunately I don’t know if there is some device in Ableton which can do this. But with Max for Live I know there are a hell of things possible :slight_smile: