If a user has a rule applied to a table that hides empty rows/columns, it can result in hiding all rows/columns. If that table is used in the Items from dropdown of the combo box control, it displays a message of "A Rule has hidden every row/column in this table" in the combo box text.

A user would like to customize this text to show as "Not Applicable" instead. It's possible to do this using the first method in https://help.displayr.com/hc/en-us/articles/4408683301519-How-to-Handle-Outputs-With-Small-or-No-Data-Using-R using R code and then pointing the combo box Items from to this custom calculation. We need a "no code" way to allow users to customize the text shown in the combo box if there's no data to show.