Views title instead of id
At the end I benefited from both @No Sssweat and @Neograph734 answers. 

First of all I added (field_tag: Content) Content: Title [nie pokazuj] field. Than I entered Content: Title field marked "modify output value" and get replacement token from there.

At the end I inputed the replacement token in contextual filter menu. 

As @Neograph734 mentioned my problem was that the contextual filter did not proper list all available tokens.