Youtube & dual account


When I login on my pc to Youtube with my gmail, I have to choose between 2 Youtube accounts, one with my real name & one with my alias.
I use my alias for subscripting yo channels, so I want to use that account in the Youtube app for ATV2 (the Firecore one).

But when I login, it auto select the account with no subscriptions :confused:
Is there a way to switch to the other account with the subscriptions?