I would like to Log the Google Analytic's Cookie info using HSL and custom profile

Hi

I am using hsl to log info from an Application VIP.

In the header is for example Cookie:_utma=1234567.1234567.1234567.1234567.1234567

Each field separated by the .

We have tried the custom logging profile but cannot seem to get the Cookie info logged.

Has anyone done this, and can you point me in the right direction.