Hi Sonja,This is a classic use case.Select your profiles with a query
and connect it to a data update activity with the identification mode
set to Directly using the targeting dimension.Then, you need to add the
fields you want to update. In your case, select the blackList field you
want as the destination and set your source to 1 by clicking on the
second button of the input.Hope it helps.Regards,Julien