Gotcha - I've never actually used this, didn't even realize it was there! Learn something new every day...

It looks to me like this particular editor doesn't have an 'and' option, which is a tad weird because it's legal Qlik syntax when used in the script editor. Assuming you'd like to remain in Data Manager mode rather than using Script Editor, you could work around it by using a nested if statement - If(Type = 'A', if(Unit = 'B',1,0),0) though I appreciate that is a tad clunky. Perhaps someone else with more knowledge about Data Manager can help you do it more cleanly, though...