Change slider handle of the SelectToUISlider plugin programmatically

Change slider handle of the SelectToUISlider plugin programmatically

(Note this is not about the official jquerui slider widget, but about  this one from filament group).

How can I move the slider handle programmatically using a play/pause button and a setTimeout, so that it behaves like timeline moving to the next tick every two or three seconds (and triggering of course the change event)?

See this url for an example what I want, except that it doesn't work as I wish.

I've struggled with sliderOptions("value", currentValue + 1) but I don't know how to tie this to an existing, instance of the slider. When using $('#slider').selectToUISlider( ..., sliderOptions()), it will create another instance of the slider ... Any live examples?

Thanks for any pointers!