Automation Envelope Key Command

Hey Everybody,



I have looked through the Pro Tools Keyboard Shortcut Guide, as well as searched all over this site and others and haven't been able to get a definitive answer on this question:



There is a keyboard shortcut that allows you to nudge the Clip Gain line up and down by the predefined "Clip Gain Nudge" value: Shift+Start+Up Arrow and Shift+Start+Down Arrow.



I use Bome's Midi Translator to map a Midi Knob to that key command so that I can raise and lower Clip Gain envelopes with a knob.



I REALLY want to be able to do the same thing with Volume Envelopes (or really any other Automation envelope), but I cannot, for the life of me, figure out how to do it. Or even if the key command exists.



Anyone out there know how to do it? Or know for sure that it isn't possible?



Thanks,

Dan