I'm using Sitecore 8.2 Update 4 with the corresponding WFFM version.
Our marketing department is passing a tracking code from their various marketing channels onto one of our Sitecore Tenant sites. That code shows up in the URL as a query string parameter. I've got some JavaScript code inserted into the site that will strip the information from the site and put it into a cookie, because there are a lot of business rules about when to use that data and when not to.
I've got a WFFM form that is used by the site visitors to send information to us. I need that form to send me that information so I can pass it on to the system of record. I currently have a custom save action that takes the data from the form and sends it where it needs to go.
What I need to know is how do I get the value stored in the cookie passed into my custom save action? Or is there some other way for me to get that information into my custom save action?