Boolean Keyswitch?

Jon Burr

In the new Snare Drum, the keyswitch for the roll technique is a B. That's the only keyswitch. To clear it you have to hit the B again.
What I'd like to know is how you would configure a Logic Pro Articulation set to trigger the roll, but also reset to a clean hit? Once you trigger it, it stays on. Keyswitches usually have different tiggers for the technique variants. I don't see any way to configure keyswitches for that instrument. ?? The old orchestra set, at least there was a different midi note for each sound…