Score Editor Not Following Song Key

Hi there -- hope someone can help me with this.

I am entering notation directly into the Logic Score Editor. I have entered the key of the song in the Signature List (and exists in the Global Track (Key of Eb). I see the correct number of flats (3) on my staff. When I enter notes however, Logic seems to want to default to sharps (#'s) rather than follow the song key. For example, If I want to enter a B natural, I'm being forced to enter it as an A#, instead of allowing me to enter it as a B with a natural in front of it. Is there some sort of switch or control variable that I need to set in order it to just follow the key and add an incidental within the context of the key? Thanks Much