compare two dates using compare validator

[elsombra]

I am trying to compare two date textboxes to make sure one date is greater than the other. I am getting errtatic response where it is rejecting this rule eventhough the date is greater. Anything wrong with this code? Here is my definition\[code\] <asp:CompareValidator ID="CompareValidator1" runat="server" ControlToCompare="txtStDt" ControlToValidate="txtEdDt" ErrorMessage="End date must be later than the start date!" Operator="GreaterThan" Type="Date" ValidationGroup="VG1"> </asp:CompareValidator>\[/code\]The date format I'm using with the calendar extender in both the dates' textboxes is 'dd/MMM/yyyy'. Thank you for any help!