I am using the banner builder to create banners for apple music, however I can't figure out how to add my affiliate token to the url as a &at already exists in the url
EG.
<iframe src="//banners.itunes.apple.com/banner.html?partnerId=&aId=&bt=promotional&at=Music&st=apple_music&c=us&l=en-US&w=320&h=50&rs=1" frameborder=0 style="overflow-x:hidden;overflow-y:hidden;width:320px;height:50px;border:0px"></iframe>
How do I add my token to the url so iTunes knows my users are navigating to this from my site?
