Question: draw something based on the slider range values

Hi,

Thanks for this cool stuff first.

Basically, what I'm trying is to draw something like a rectangle or a combination of rectangles, like a plot that represents the ranges selected currently in the sliders.

To do this I think we need to get the IDs of values that could be dynamically changing by users.

Is there any idea about it, or is it impossible at this stage of the library?