[rules-users] No activations created for condition with two checks for collection size

[Tina Vießmann]

Hi,

I'm trying to check the following condition:

     when
       $currentLowLimit : LimitViolationEvent ( limitTypes.size == 1
&& limitTypes contains LimitTypes.ACTIVE_LOWER_LIMIT
&& parameterNames.size == 1 )

limitType and parameterNames are both Sets. I know events exists which 
satisfy the condition. But why are there no activation created at all?

Thank you,
Tina