@BeekerMeep, I tested the async code and it worked for me, custom variables are tracked !
Im not sure what's happening for you. Maybe try debugging as explained in: [piwik.org]
then you can see if Piwik tracks the custom variables
Im not sure what's happening for you. Maybe try debugging as explained in: [piwik.org]
then you can see if Piwik tracks the custom variables