New Forum not picking up my SC2 account

So I logged into the new forum, and it shows my profile as my highest WoW character. My wow account is not currently active though I do have an active SC2 since I still play that all the time. So how am I able to login under that account so I can actually post in the new forums!!!??
Thanks, and new forum looks great by the way.|||Sorry, I found where I can select my SC2 "character". Sorry for the post.|||can u share where u found it? :) im still looking for it|||On the upper right where you see your name and WoW character, click the down arrow and select your Starcraft 2 profile name with # ie mine is Venomlace#777|||thx!:) it worked now after i searched for my char name and a # after it as u said : )