Tally up all check boxes in a row

Hi @Sarah_Arminta ,

This post talks about the same issue:

https://community.coda.io/t/checkbox-count-in-a-table/6395

I tried to recreate @Nick_HE 's solution:

To count the checkboxes in the row, you can actually just add them up.
=CheckboxColumn1 + CheckboxColumn2 + CheckboxColumn3

here, but ran into an interesting condition where it works in one row but not another: