Admin menu localization

How is it possible to translate menu items (custom collections) ?

I have created the required files admin/src/translations/xx.json
And imported the languages on index.js

I have added my string for example: “Order Statuses”: “my translation”
But it doesn’t seems to be working.

System Information
  • Strapi Version: 3.4.5
  • Operating System: windows10
  • Database: mongodb
  • Node Version: 12
  • NPM Version: 6.14