iMessage stickers one size?

I developed a couple of iMessage sticker apps, one of which has medium size stickers and the other has large stickers. Since the iOS 17 update all of the stickers are showing as small size when sent in a message. I don't see a setting in Xcode for 1-column, 2-column, 3-column anymore. How can I get my stickers to show at the correct size again when sending/receiving in iMessage?

Edited to add: I have discovered that although the stickers show as small when I send them, they are still receiving in the correct size. I still don‘t see the column setting in Xcode, so it would be useful to know how to set the desired sticker size. (perhaps it is now automatic based on image size?)