Using button as increase/decrease input in ableton

Hi everyone i found a trick

you can configure two buttons next to each other to the same cc
one you give a min and max 0 64 and the other 65 127
now in ableton map it to a parameter you want to control.
in the bottom line it will show as an absolute mapping -> change it to relative (signed bit)

it would nice if button could be configured like that in general -> add a fix value with each press or decrease value