How to call a function on "knob change"?

[mantabernd]

Hello,

I'm wondering how to use the knobs to call a js function? I implemented the knobs to my design and all looks nice but I'm not able to call a function on changing the knob.
What works is ng-mousemove="...()" but this calls my function every time I move the mouse over the knob.
I just want to call my function when the knob value got changed by moving the knob.

Is there a way to make this possible?
Are there any other ways to readout the knob value? For now I don't see the uasge of these knobs when I'm not able to work with the values...

Thanks in advance.
Bernhard