Is the new command center capable of assigning a button to be a momentary switch? I've been looking for infinite reverb (e.g. Big Sky) out of the Helix for years. I could swear that someone told me I could create a momentary button, assign a reverb to it, and hold forever as long as the button is pressed. I can't find the post and I can't see how to do it. Is this even possible? Thanks.