Thanks for the reply. What if eVar0 is already set up? I have data populating in that variable today. But I do not have data populating in s.campaign.

I am wanting to build classifications off of my eVar0 (tracking code). But I am not seeing eVar0 listed as an option when creating a classification under conversion variables. Is there any reason why it wouldn't be listed as an option? Is there another way to handle this?