now you can toggle FX by track and slot number... very new via this script:
https://forum.cockos.com/showthread....62#post2006062
do you have reapack installed? if not you will need to do that...
then browse for lokasenna toggle and install that script...
then run it from the actions list and enter the track # and FX Slot # and then save as to a new action...
then you can give that action a key binding, which can be a midi key
keep in mind that you can make as many of those toggles as you like and can then combine them into your choice of custom actions and give those key bindings at will...