I am trying to create 4 post fields and hide #4 if #3 is empty, hide #3 if #2 is empty, and hide #2 if #1 is empty. All of this is for the back-end admin options only—not front-end.
I'm using the post fields conditional setting: "Custom Field" "> is greater than" "0" (see attached screenshot).
The value of the custom post field will be different URLs, so there is no exact value to compare. Is this the correct setting and value("0") to show/hide a field based on whether the field is empty or not?