I believe it is grammatically correct if use it in a context of appearing somewhere to see if a change happens (ie: Oh, they don't want to do the party? How about if I appear then?)
But the puzzle doesn't seem to care. Fear not though, for it has given special permission to Fett to get a 2 for 1.
_ A _ _ _ A _(7)
Incorrect: S,L,E,R,I
Remaining: 4