Trying to do date field greater than a specified date in condition editor

Hi All,

I am trying to build the XML predicate in the expression editor to check that the posting date sent is greater than a specified date to determine the reciever. I can get it to validate posting date is = to specified date, but when I change the = to > it fails to properly determine the receiver, when I send a valid document.

Below is the expression build

(/p1:ServiceAcknowledgementConfirmation/ServiceAcknowledgement[CreationDateTime>'2007-02-03'] EX )

has anyone done this type of check. I have it set as a date type for the expression.

Regards,

Chris