Loading options from csv for a normal select

Hi all,
I am trying to load the choices for a select node form csv.
Was trying the steps from following link.

https://opendatakit.org/help/form-design/external-itemsets/

But I could not come up with query to fetch all values of a single list with out cascading.

Tried the following queries:
instance('counties')/root/item
instance('counties')/root/item[counties]

Can any one tell me where am I going wrong.

Thanks in advance,
Deepthi Chand