Example of custom variable with google analytics for WordPress. https://developers.google.com/analytics/devguides/collection/gajs/eventTrackerGuide http://www.optimisationbeacon.com/analytics/track-website-optimizer-tests-with-yoasts-google-analytics-plugin/ http://www.lunametrics.com/blog/2012/08/28/20-ways-use-custom-variables/#sr=g&m=o&st=(op…

gistfile1.txt

add_filter('yoast-ga-custom-vars','add_ga_custom_vars',10,2);

function add_ga_custom_vars($push, &$customvarslot) {
   $my_custom_val = "whaterver";
$push[] = "'_setCustomVar',".$customvarslot.",'My_Custom_Variable','".$my_custom_val."',3";
   $customvarslot++;
   return $push;
}