For all of the on/off toggle parameters (active/bypass, octaves, etc) you will need to send a CC value of 64 or higher for the on state, and 63 or less for the off state.
You can also use H90 Control to confirm your pedal MIDI settings are correct. I would suggest setting the MIDI channel to OMNI while you are troubleshooting:
https://cdn.eventideaudio.com/manuals/h90/1.9.7/content/h90-control/dot9.html
