I used the same code as in Superzip example to create a page with a data explorer, below is my code for the filter:
It turns out that when I select one State two issues happen:
Datatable shows 0 records, which is not true
Counties dropdown field never shows the County names
I tried inspecting the code, but it seems hard to debug this part. I'd love to ask for suggestions about how to solve of ir someone find a bug in the code.