Testing your app with different license states

Hi Dev Community,

I am trying to release my first app on the Atlassian marketplace.
I am following the tutorial “Listing Forge Apps” which contains a section with a function to check different license states https://developer.atlassian.com/platform/marketplace/listing-forge-apps/#testing-your-app-with-different-license-states . I am unable to properly set this function up with the environment variables (also the hyperlink to the “environment variables” right under the function is broken → 404). How would you set this up correctly ?

I am sorry it might be a very trivial question, this is my first project.

I am thankful for any help.

Best Regards,