Add a caption on a light box?

I am assuming it’s possible to put a text caption under a image in the light box. But so far I’ve not got it to work. Are there any tutorials/examples anywhere?

You can add a caption in the Interaction section of the Properties panel:

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Yeah, thing is no caption ever appears when I type in that box

Not sure why that should be. I see a caption on all lightbox types. Here is a screenshot.

Maybe you should close the project, exit from Blocs and restart the app. I can’t think of anything else that could cause the issue.