[rules-users] try to understand Banking example 3

[ferry97]

Hi, 
I'm trying to understand the Banking Example 3.

rule "Rule 01"   
    when
        $number : Number( )
        not Number( intValue < $number.intValue )
    then
        System.out.println("Number found with value: " + $number.intValue()
); 
        retract( $number );
end

The result is :
Number found with value: 1
Number found with value: 1
Number found with value: 3
Number found with value: 4
Number found with value: 5


But if I remove the "not"
The result is :
Number found with value: 5
Number found with value: 4
Number found with value: 3

Why ? How does it work ? why the two number "1" is gone ?

Please help 
Thanks
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