Pass parameter from 'Initialize' test to webtest-Collection of common programming errors

Thanks for the link. I tried creating a global parameter named exactly as my session_ID parameter within the load test itself to ensure it would get created. That seemed to work, I then removed the parameter and it still works. I think this could be one of those ‘user errors’!

So just to confirm, it seems that there is nothing special needed to pass parameters between an initialize test and webtest, as long as the parameters are named the same. Please correct me if this incorrect.