Thank you, that helps explain—I completely missed the note about multiples/inline. Still, I cannot get the value list to populate even when using dropdown instead of inline. In this screenshot, you can see I have made multiple selections (shown comma-separated where the picker dropdown would be) but in the inspector you can see that the value list is still empty.
It seems that no matter what I do, the value list is always empty.
I may just switch to ranges to keep it simple, though I think multiple values suits my need better. Either way … I do appreciate this plugin. Thanks!