It is possible to create an exprescion tag which, as a value, shows the selected text in a dropdown box
I think a little bit of context could help here…
Are you thinking of using a gateway tag or client tag?
A tag could be bound to the dropdown’s selectedStringValue property. This would show the last selected value, set by any of the clients.
Using a gateway tag means that every client would be competing to set the value.
Client tags are server independent and could be used to cache a selection during the client’s runtime.
But you wouldn’t necessarily have an expression tag (specifically because if the window is no longer open, and how you need to handle multi-client scenarios).