Postman Implicit call, unable to store token in variable

I am trying save auth token received from OAuth2 Implicit flow into an environment variable.
This is not happening automatically. Below are 2 screen shots which depict the same.

I tried multiple ways to use same ‘Token Name’ as variable name and even use ‘Test’ script to store output value from it into my environment variable. But no luck.

OAuth 2 Implicit flow token in Postman:

Environment Variable still empty:

Please let me know if I am missing any steps or there is some other way to achieve.