Plaits‘ FM attenuator

Is there way to control the function the FM attenuverter has when nothing is plugged to the FM input? I really like what it does when nothing is plugged and would love to voltage control it, instead of getting FM.

When nothing is patched in the FM input, the attenuverter controls the amount of internal envelope. If you want to voltage-control that… use an external voltage-controlled Decay envelope (like a channel of Stages).

Yeah, sure. It not the same though. Thanks for getting back anyway.