Unexpected date behavior in QUIZ

[Leonard_Berkowitz@harvardpilgrim.org]

Here's the code:

DEFINE D-START-DATE DATE FORMAT YYYYMMDD = &
    PARM &
    ON ERRORS REPROMPT &
    FORMAT MMDDYYYY &
    PROMPT &
        "Starting date for Schedule Date (MMDDYYYY)? "

Here's the result.

Starting date for Schedule Date (MMDDYYYY)? 12311999
This entry must be a valid date. Please re-enter.
Starting date for Schedule Date (MMDDYYYY)? 12312000
<accepted!!!>

A year 2000 or 2001 date is accepted but year 1999 is not. I've tried this
with Default Century=19 and =20 (not that I expected this to make any
difference) with the same result. This is code that previously did accept a
1999 date.

What am I not seeing? Thanks.
===================
Leonard S. Berkowitz
Perot Health Care Systems
(Harvard Pilgrim Health Care account)
voice: 617-509-1212
fax:   617-509-3737
pager: 781-226-2431