Label print / Other paper sizes than Letter or A4

Hi

There should be limited support for label print:

https://learn.microsoft.com/en-us/universal-print/fundamentals/universal-print-label-printing

But I can't see any way to print other paper sizes that A4 or Letter.

I have set "enable-all-supported-pdf-job-attributes" to "false" on the connector, but I still only see A4 or Letter as paper size in printer properties.

The printer I'm trying to print to is a Citizen printer.

What do I miss?

/Kim