I’m having a similar issue, but I want the dropdown to show the last modified thing in the list. Any ideas?
When I search the forum and documentation, there are several promising looking articles but they are private or have been removed.
I’m trying to set up some dropdown boxes:

- They already have lists, and I would like them to be in alphabetical order. This is simply “Current User’s Medium List:sorted by Medium name.”
- Then, when the User clicks the ADD button, a PopUp appears, and the User can add to the list. This should then be seen in the dropdown box. This I can do with the default value Current User’s List:last item.

Clearly, I can’t have both as a default value for the dropdown box.
- So the question is, where do I create the event that puts the ADDed thing on the List into the Value of the dropdown box?
Is this something that happens when I hit ENTER after ADDing the thing?
Maybe it’s a Custom Event.
Maybe I should go with 2 above Current User’s List:last item. as default, and THEN sort alphabetically.
Any ideas??