How to change 1 finger scroll behavior in audio app. I like to add CMD+SHIFT to the scroll without pressing them

Hi, in Studio One 5 audio app I would like to change the 1 finger magic mouse scroll so that when I scroll with 1 finger (up/down) BTT will add CMD+SHIFT (without me pressing it) so the app Studio One 5 sees CMD+SHIFT scrolling coming in, but me only scrolls with 1 finger on the Magic Mouse without pressing the modifier that possible (before I buy this great app :wink: