[rules-users] How to check if a property IS null ?

[Wolfgang Laun]

Works for me.

You'll have to provide a *complete* example, Java and DRL to reproduce
the effect you are describing.

-W


On 03/08/2012, Hendy Irawan <hendy at soluvas.com> wrote:
> I'm trying to check if property is null, but the rule is never fired :
>
> Sample :
>
> rule "Cancel"
>     when
>         $action				: CancelProductBookingDetail( created == null )
>     then
>
> end
>
> (created is of type java.util.Date)
>
> Any help is appreciated.
>
> Hendy
>
>
>
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