[Zope] Need to use a 'date' data type in sqltest

I need to include a test of a date in a DTML variable referenced in a sqltest tag in ZSQL. From reading documentation and testing, it does not appear that the 'date' data type is supported. Can anyone confirm/infirm this and suggest a solution/workaround? Regards, David H. Jones Boeing Phantom Works, Mathematics and Computing Technology 425-865-6924 425-865-2964 (FAX) david.h.jones@boeing.com