If it's your interview medical, I don't think you'll make it. Once you've been hired, you can go over 30 BUT.... you will have to jump thru so many hoops it'll be worth starving yourself the month before your medical.
Expect sleep studies, EKG's and numerous other BS things (those hoops) you'll have to go thru before being given your medical.
It's become a Chinese/Astronaut medical IMO.
And the one or two "reasonable" doctors there at the clinic who used to roll their eyes at this nonsense are now forced converts and you have no one on your side.
Oh, and the sleep study is 80 miles away in another Emirate.
So much fun to look forward to IF you're even .01 over 30 BMI.
My fun all started at 30.64. WTF?