Problems with FooBox lightbox in SiteOrigin pagebuilder

I try to add an image in the pagebuilder (SiteOrigin Editor)
– and make Custom Target “FooBOX”

But it doesn’t work.

It works, if I put in a shortcode from a FooBox gallery
– but then I have to make a gallery for every picture, to make it work ??

Is there some way to fix this?
My page

– Maiken