How to get GroupSessionJournal API to work?

Hi there,

I'm wondering how to get GroupSessionJournal API to work.

I have gone through the "Share files with SharePlay" session WWDC23 and have been unsuccessful at getting the DrawTogether example app to work with syncing the images using the GroupSessionJournal as described and shown in the session.

When I run the DrawTogether example app with the GroupSessionJournal code in it, I can get the two devices to see one another and the strokes will update across both devices in realtime (they are using GroupSessionMessenger) but the image code doesn't cause images loaded on either side to sync to the other device.

Is the GroupSessionJournal still in beta - and/or I'm missing something?

Cheers! j*