Using ZIM Slider, how do we know if we slide up or down?

Questions
1

In this example, ZIM BITS - Damping and Easing for JavaScript HTML 5 Canvas and CreateJS - Tips, Techniques and Tutorials
how can we know if ZIM Slider was slide up or down?

2

The Slider slides left to right if vertical is false (horizontal) and slides bottom to top if the vertical is set. So lower numbers at bottom like a vertical volume slider. Not sure if that answers your question. I find that if I want a vertical slider to go lower at the top and higher at the bottom (which I just wanted recently) that I use a horizontal slider and rot(90).pos(wherever).

3

In the example, sliding up will rotate objects clockwise and sliding down will rotate counterclockwise. Is it possible to detect if we start to slide up or down?

4 
const label = new Label({text:"DIRECTION", align:CENTER})
    .reg(CENTER)
    .pos(0,100,CENTER);

const slider = new Slider({vertical:true}).center().change(()=>{
    label.text = slider.currentValue > lastValue?"UP":"DOWN";
    lastValue = slider.currentValue;
});

let lastValue = slider.currentValue;
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