Oh! I see!

After reading the docs and looking at the examples, I somehow managed to walk away with the impression that the element was dealing with the row and not the column of the table. I'm not sure how that happened, but thanks for setting me straight.

I suppose if a monk has to have an epiphany, Maundy Thursday in Holy Week is a good time to have one. Thanks, O Sagacious one. (Okay, I had to work hard to come up with a word that references your level).

I will play with the code and try to deepen my understanding, because this is a fundamental.