Cannot log a cookie with a dash in the name

[Hates_]

I am trying to log cookies but they have a dash in the name as such:

    "Member-v1.0=$cookie_Member-v1.0"

My logs come through as:

    Member-v1.0=--v1.0

Is there a work around?

I've tried wrapping the name in curly brackets and also using
underscores but get an error about an unmatched bracket or no value.
I've tried the following formats:

    "Member-v1.0=${cookie_Member-v1.0}"

    "Member-v1.0=$cookie_Member_v1.0"

    "Member-v1.0=$cookie_Member_v1_0"

Any help would be greatly appreciated. I don't want to have to move to
Apache :\

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,223770,223770#msg-223770