I am using a Dax measure (see below) with a multi-row card that is allowing me to multi-select customers per a slicer. The Dax measure is working, but the customers per my selection are displayed/listed horizontally in the card instead of vertically. How can I get the customers to list vertically?
Try switching to a regular card, rather than a multi-row, , make sure you have wordwrap turned on, and adjust the width of the card until the returned values cascade vertically.
The other trick I have found useful is instead of using a card, use a table with only one cell. Gives the same effect as a card, but gives you more control over the formatting options…
After I posted the message above, I recalled that I had provided a solution to a very similar issue earlier this year. I dug out the PBIX, which is posted below.
