@mania,
The value is the backend name for the block you are choosing. Prompt and response field shows the actual message of the block in bot conversation. Hope that helps.
I suggest you go through the learning plan for virtual agent in Dev site until the end so that you can develop VA topic better. Here is the site: https://developer.servicenow.com/dev.do#!/learn/learning-plans/xanadu/servicenow_application_develop...
If you go through this and complete hands on available in it, all your questions will be solved.
Check out this doc of all the screenshots. I am unable to post screenshots directly due to some issue.
If you found my response helpful, please mark it as Solution and Helpful.
Thanks and Regards,
Ehab
