Dimensions display problem?

I’m actually trying to display alternatives dimensions (mm and alternatives inches), but it only appears as millimeters, wath’s wrong with my settings? The lenght factor looks OK…
Rhino V6 SR 12 Windows 10

Facteur de longer should be 1 - you don’t have to convert as Rhino understands the ratio between units.

Regards
Jeremy

Thank you Jeremy, it works!