Hi everybody,<br><br>I have a class Car which is superclass for class ConvertibleCar, two rules (described below) and a ConvertibleCar fact in working memory that causes both rules to fire, resulting this way an unwanted change to the car`s attribute and an infinite loop. <br><br>How do I evitate this problem: the specialization class fact to not match its superclass column in a rule? <br><br>ConvertibleCar car =new ConvertibleCar(10000);<br><br>rule "rule-1"<br> when <br> $car:Convertible()<br> then<br> $car.setPotentialTheftRating("high");<br>end<br><br>rule "rule-2"<br> when <br> $car:Car(price<20000)<br> then<br> $car.setPotentialTheftRating("low");<br> end<br><br>Best regards, Oana<br><br><br><p> 
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