How can i enter a foreign country in the "employee's address" box of my W2? The "Foreign country" box seems to be inactive.

In the "review" section, I am asked to "Check this entry: Form W2: Employee state - either a country or a state and zip must be entered". I am then presented with a box allowing to enter a State code, but nothing for a foreign country.
Below, the detailed view of my W2 also allows me to change the State code, but the "Foreign country" drop box seems to be inactive.