Hi,

I wonder if the combination of ‘not’ and ‘exists’ keywords is a valid one and therefore the construct like

rule “myrule”

  when

     not exist MyObject(param matches “somepattern”)

  then

     System.out.println(“Object for pattern ‘somepattern’ doesn’t exisit”);

End

Thanks.

Vlad

PS: basically I need to trigger a rule if some set of facts is NOT found and I need to trigger it only once.