Hello, I ask for a way to solution:
I've correcly configure these dropdown. Now SOTTOGALLERIA dropdown view only the subgalleries of GALLERIA

I would like add a "conditions": if GALLERIA = NONE, in SOTTOGALLERIA Dropdown I would see ALL subgallery, ELSE I would see the subgallery of GALLERIA selected.
Where I work to reach the goal?
If you need I add another screeens.
Thank You.
I've correcly configure these dropdown. Now SOTTOGALLERIA dropdown view only the subgalleries of GALLERIA

I would like add a "conditions": if GALLERIA = NONE, in SOTTOGALLERIA Dropdown I would see ALL subgallery, ELSE I would see the subgallery of GALLERIA selected.
Where I work to reach the goal?
If you need I add another screeens.
Thank You.