variable's declarations

shall i define variables using conditions in default/main.yml file.

ex : - host1.com
when: env == ‘dev’

quick response greatly appreciated

Regards
Venkat

Hello Venkat,

Yes of course, I suggest you take a look here:
https://docs.ansible.com/ansible/latest/user_guide/playbooks_conditionals.html

However, this list is not the proper place for such questions.
I strongly recommend that you send such questions to the "ansible-project" mailing list.

Reference : https://docs.ansible.com/ansible/latest/community/communication.html#asking-questions-over-email