This Max for Live Pack gives you 4 devices for controlling and automating Macro Variations of Instrument, Audio + MIDI Racks in Ableton Live:

CYCLE MACRO VARIATIONS – gives you access to select + trigger Macro Variations Up/Down
SELECT AND MAP SINGLE VARIATIONS (AUDIO + MIDI) – lets you trigger specific macro variations
AUTOMATE MACRO VARIATIONS – lets you change and trigger variations automatically
All devices can control macro variations of MIDI EFFECT RACKS, AUDIO EFFECT RACKS and INSTRUMENT EFFECT RACKS.