@d-healey Thanks! Everything's working as expected now!

@d-healey Thanks for pointing out the register-function. Two things I notice:

1. When I try to do that and even in your example, the interface sliderpack somehow ends up with a huge number of sliders, ignoring the sliderAmount-property.
2. My sliderpack only can connect to a processor ID, not a parameter. So what happens when I register two sliderpacks?

I'm trying to create a simple sequencer where I can set the velocity per step with a sliderpack. I just can't find a way to connect it to the midiProcessor, that handles all the NoteOn/Off and Timer stuff. All I needed to do is to get the slider values to that midiProcessor. Any help is appreciated!