Using the Appian Common Objects 7.2 rules, is it supported to nest ru

1/1/9999 is not the same as null. It's a workaround. It's used as a substitute value for a separate PV to be used for this filter only. In the event that the date is null, setting the filterDate to the year 9999 will always make the filter compare it greater than now(). so rf!date1Filter > now() is equivalent to date1 > now() OR date1 is null. If you walk through different examples then you will see that it always returns the desired output.

1/1/9999 is not the same as null. It's a workaround. It's used as a substitute value for a separate PV to be used for this filter only. In the event that the date is null, setting the filterDate to the year 9999 will always make the filter compare it greater than now(). so rf!date1Filter > now() is equivalent to date1 > now() OR date1 is null. If you walk through different examples then you will see that it always returns the desired output.