Modifier - Sticky Key (change from momentary to toggle)

[User]

Many midi controllers have a lot of buttons that send CC only when they are pressed (e.g. drum pads), making them only suitable for "momentary" functions. If there was a modifier that, on the basis of sticky keys, maintained the on/off state and changed when pressed again, then they could be assigned functions such as mute track/record, etc.

In example Akai Midimix controller have problem with it - Mute buttons can be switched only between momentary and... doubled momentary (two values may be sent). It can't be correctly assigned to Toggle Mute function in BlueBox for example.