Hi Iwan,
normally, it should looks like this:
i dont know why the Enum is not selectable in Mendix Studio.
You can try it again with the Expression. Watch out to use the right name of the Enum.
If you plan to create more complex applications in the future it is highly recommended to use Mendix Studio Pro.
You can download it here:
Mendix Marketplace - Studio Pro 9.23.0 - Download
Hi Iwan,
Could you add a Screenshot of this Page?
I can click the “select” button, but nothing happends. There is no error message.