I understand why the order needs to be inverted. But that results in the inversion of the whole condition. I'm not sure how to revert the condition.
The complete condition without 'not contains' and inversion is:

        $object : MyObject ( activated == false,
                             $name : name,
                             $firstValue : firstValue,
                             $valueList : valueList )

        // getting the event representing the Value object
        $firstValueEvent: Value( this == $firstValue )

        $newValue: Value ( name == $name
                                        && this != $firstValueEvent
&& this after[0ms,1h] $firstValueEvent
                                        && $object.parameterValueList not contains $newValue
                                        && eval( !($valueList.contains($newValue))
                                                         && valueExceededLimit($newValue)) )

To use not contains, you'll have to invert the order of the patterns:
$ value : Value ( // other restrictions )
$object : MyObject ( $valueList : valueList not contains $value )
This will use the evaluator which should be more efficient than eval()
-W

2010/11/1 Mauricio Salatino <salaboy@gmail.com>

can you try with
$valueList not contains $value

but internally I suppose that it will work in the same way that the eval.

On Mon, Nov 1, 2010 at 11:55 AM, Tina Vießmann <tviessmann@stud.hs-bremen.de> wrote:

Is it possible to write the following conditions without using eval?

$object : MyObject ( $valueList : valueList ) // of type List
$ value : Value ( // other restrictions
&& eval( !($valueList.contains($value)) ) )

Thank you :)
Tina
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