Sustain in midi control centre

[bunja1979]

hi i want to use the hold button to sustain until i get a pedal but how do i add this to the hold button and apply a small amount ?
i did it once but now forgot any help please thanks

[MajorFubar]

There is an option in the MCC to turn the hold button into a sustain button. But it can't apply variable amounts, the hold button is either on or off. Happy for someone to correct me if they know otherwise.