Deceased sibling on common app?

Hi there! My brother passed away in July of last year (2016) and I can’t quite figure out how to list this on the common app. It asks sibling’s age (I tried to type “deceased” in this blank, but it only allows numbers). He was 19 when he died but would be 20 now, so I’m not sure what to put there. I listed his education as “some college” and entered his start and end dates, but don’t know if there’s anywhere to list him as dead or if I should. I want to list him because he went to one of the schools I’m applying to and I’m hoping it gives me legacy status.
Thanks!

^^Bookmarking this because I have the same exact question

Email the common app help desk and see what they recommend.