No-go areas in scenarios

I'm trying to test the way to show no go areas in scenarios in the new scenario editor. Let me told to y'all the trick in the old SL editor: made the no-go areas and then name it as a contry and disable it in the scenario editor.

Well, this thing isn't working in the new map and scenario editor.

I made the no go area and after that, it doesn't let me name it as a country.

Therefore, i can't make visible the no go areas in the scenario for the map.

I hope clovis can fix this thing.