bluetooth keyboard HELP REQUIRED!!!

hi
i have just this morning received my new bluetooth keyboard for my ipad 2. first impressions are very good until i noticed something quite vital. the shift button doesnt work!
i was just wondering whether anyone else has had this problem and whether i am missing something/can do something bout it or is it jus a case of a dodgy keyboard.
its not a massive deal but whenever i want to do an underscore or question mark i have to open up the in build ipad 2keyboard and its getting quite annoying!!! (just had to do it then)
if it will help the link for the keyboard i bought is below.
iPad 2 New Leather Folio Stand Case With Built In: Amazon.co.uk: Electronics
thanks guys
danny