selector target datatable columns for hint

I’m playing around with webix hints, and I came across a problem when trying to make a tutorial with datatables. I would like to have the hints box target a specific column or row, as well as the various header elements. There doesn’t seem to be any way to target these elements uniquely, not by class or id at least.

I tried using nth-child, in el:, but that doesn’t seem to work. I see I can put webix id as the el, but putting column id doesn’t seem to work either.

https://snippet.webix.com/ey26xoz0