Hey @slangham, not every column is supported by the items_by_column_values operation.
Specifically, columns that can contain multiple values (such as tags, dropdown, people) cannot be queried, and nor can columns that don’t have support via our API (formula, progress, etc).
Other than that, you should be good to go! Your search term should correspond to the text version of the column value.
For example, the raw column value of a status is something like this:
{"label" : "Done"}
But the text version is this:
"Done"
If you put the JSON string into the search term it won’t work, but if you just search “Done” it will.