CalendarExtender Format

Hi,
I use an Ajax CalendarExtender with format equal to "MMM-yyyy" so this way, it displays like Jun-2014. When it comes the time to save that value to the database, I wish to have 012014 instead. My question is can the format beeing display and the value beeing saved, be in a different format? 

<asp:CalendarExtender ID="calendar3" runat="server" TargetControlID="TB_StartMonth_VM"
 Format="MMM-yyyy" OnClientHidden="onCalendarHidden3" OnClientShown="onCalendarShown3"
 BehaviorID="calendar3" Enabled="True"></asp:CalendarExtender>

Thanks!