Is there a plugin that can set MIDI note volume/velocity as a ramp across the keyboard?

I’m asking the community oracles whether anyone can point me to a MIDI plugin that can set MIDI volume & velocity in a gradual ramp across the keyboard?

This is for layering where I only have one keyboard but I wish to have two or three voices overlap but have some voices more predominant in the bass and others more predominant in the treble.

I know there are plugins that can set or filter MIDI note volume/velocity as a constant across a keyboard section.

I’ve unsuccessfully tried a multiple plugin chain where I use plugins that split the keyboard and then another set of plugins to set note volume/velocity. However, after a minute or two - notes get stuck as NoteOn and I have to use Panic to halt. But then once I’ve done that - no NoteOn works until I reset the plugins.

Any pointers would be appreciated.