> Mehdi wrote:

hi,

I have a class Customer.java with class variable "allTradeAmounts" and

I have two rules as follows:

rule "rule 1"
    when
        $c : Customer();
    then

        $c.setAllTradeAmounts($c.getAllTradeAmounts().add(1000));
       System.out.println("after modify: "+$c.getAllTradeAmounts());

how does the engine know this has changed? call:
update($c);

>> If you do that, you're going to loop (the rule "rule 1" is always true)

end