Yeah, you can do this in visual logic a couple of ways... Either tie the visibility of each row to the 'is empty' value of the text designated for that row, so that rows only appear if they are populated, OR you could have a text field who's visibility is toggled off, but published so an operator could enter a number, and you tie said entered number into row visibility... There's likely at least a half dozen other ways to accomplish it too, but these are the ways I have gleaned how to make this kind of thing happen...
#XPression