[rules-users] How to use not operator in drool.

[Gaurav2007]

Hi ALL,

I am using drool4.0.1 in my application i am able to use IN,OR,AND operator
but i am facing problem in using not operator.

my requirement of not operator is just like a not gate.

the way i am using it is :

eval(not((Map( this["city"] !="mumbai"))||(Map( this["city"] =="delhi"))))


so can you please help me out to solve this problem:
should i use not operator or some thing else in drool.

Thanks,


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