How can I create a view that displays a field from the current post?

I can easily create a view for a field but I am not able to filter by current post. 

I see documentation that says to try setting Basic settings to Single entry. 
(that does not exist - docs not updated probably)

I've tried adding different filters. Post ID is equal to Current - this seems to pick a random entry.  NOT the current post. 
Post ID is equal to Current_id - this seems to pick a random entry.  NOT the current post. 
Entry ID is equal to Current - this gives No results
Entry ID is equal to Current_ID - this gives No results

I cant find any codex, list, reference to what can be placed in the Entry Value for the filters. 
(other than some small examples in the docs)

Am I trying to do something that is just not possible?

Thanks in advance to anybody that can help.

Cheers!