look at hte Shopping Example, I use sum() there, but the concept is the same:

rule "determine 10% discount if total purcahses is over 100"
    no-loop true
    when
        $c : Customer()
        $i : Double(doubleValue > 100) from accumulate ( Purchase( customer == $c, $price : product.price ),
                                                                    sum( $price ) )
    then
        $c.setDiscount( 10 );
        insertLogical( new Discount($c, 10) );
end

Mark
tom@bergstein-soraic.de wrote:

Does anybody have a good example about using count()?


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