MuShoo

Not sure fi this is the desired behavior or not - mapping a key to a ubutton never triggers the 'mousedown' outlet - it only ever triggers the mouseup outlet. I find I use a lot of ubuttons, and I like having both outlets functional (to do small feedback UI changes while the user is clicking). My expected behavior was that key-being-held-down = trigger 'mousedown' outlet, then trigger 'mouseup' when key is released.

Not sure fi this is the desired behavior or not - mapping a key to a ubutton never triggers the 'mousedown' outlet - it only ever triggers t

ubutton-keymapping-unexpected-behavior

You're right, especially in "Momentary Mode", it would be nice to have the "Mouse down" first, then "Mouse up" when released.

Thanks for the report, the problems appear to have less to do with mapping than with ubutton's communication with the parameter system. To see what I mean, click around on the upper toggle in this patcher with the parameter window open:

Ubutton keymapping unexpected behavior