Yaml and snippet of single image in a a gallery block


I’m using the gallery block and I wish to add to the image files in it some fields (caption, for example).

in the panel it was written that in order to set yml to the images in the gallery I need to add a yml file inside ‘site/blueprints/files/blocks/image.yml’ - and so I did, and it works fine:

The problem is that I can’t find where to edit the snippet of it so it could actually call the caption field. The regular ‘snippets/blocks/image.php’ doesn’t affect those files.
Any idea how to reach those fields?

I would appreciate any help - thanks!

Ok - silly me - it’s in the gallery.php of course.
Long hours of coding… :sweat_smile: