Here's some screenshots for an example.
In the environments set up (same for staging & production, except that the value of testvariable in production is "prod"):
In the resource (same set up for staging & prod):
In the app:
Vs when in staging:
Here's some screenshots for an example.
In the environments set up (same for staging & production, except that the value of testvariable in production is "prod"):
In the resource (same set up for staging & prod):
In the app:
Vs when in staging: