On Tue, Sep 27, 2011 at 4:55 PM, apple <[email protected]> wrote: > The new date/time widgets do not seem to have an option to set a blank > date/time. Once you have clicked on the date field you have to set a > date. Backspace and delete keys have no effect. > > Is there a way to leave the date field blank or to delete a date?
Try this in your model: IS_EMPTY_OR(IS_DATE()) Joaco.
