If FormatDate is not working then below is the workaround i could suggest.
a1=FormatDate([Date Obejcts];"dd/mm/yy")// This will bring date in 10/03/14
a2=Right([a1];4;lenth([a1]))// This will extract mm/yy i.e 03/14
If FormatDate is not working then below is the workaround i could suggest.
a1=FormatDate([Date Obejcts];"dd/mm/yy")// This will bring date in 10/03/14
a2=Right([a1];4;lenth([a1]))// This will extract mm/yy i.e 03/14