Google analytics

Is it possible to change the google analytics standard implementation?
Now an event is fired when someone buys something, with product category.
I would like to add a field in that event if the costumer is Retailer or not. Is that possible?

Litium version: 6

When you fetch the script from the Litium.Web.TrackingScriptService.GetHeaderScripts(Page, object) the object-parameter can be a List<string> and that information should be included in the tracking script.

Accelerator will call the TrackingScriptService.GetHeaderScripts in the LayoutController.Head-method as default.