How do you add/remove property via TMSH?

Stephan, thank you so much for responding to my post!

I'm not quite sure how to check the TMOS. Could you assist?

As for the actual commands, I am able to modify any properties that already exist in the httpd {} object. However, I am not able to properly remove them. In the 1st example above, I'm actually trying to add the ssl-protocol to a empty httpd {} object. Modifying an existing property doesn't throw any errors for me.

Does that better illustrate the issue i'm experiencing? Thanks!