Hi fiddlercrabseason,
When using CV with H90 use the EXP 1 or EXP 2 settings in the I/O section of the system menu depending on which input you’re connecting to. Then, whatever parameters you assign to the expression pedal in the Parameters menu will be controlled by the control voltage. To learn how to assign parameters to a controller I recommend this video. Go to 48:08: https://youtu.be/5y14LwN9oAk?si=6-pFT3AwH1_wzvwh
