Inserted fact not available for next rule

[psantann]

I have a sequence of rules as below. Even though I'm inserting a new AlarmFact and I can see it was created with the proper name, the next rule "We got a new alarm" is still executed so I end up with two AlarmFacts one with count=2 and another with count=1

rule "Process an incoming alarm":
agenda-group "process alarm 1"
when:
$alarm := Alarm()
then:
log("We got an alarm with name {0}".format($alarm.name))
attribute current_alarm_name = $alarm.name
forget $alarm

rule "We got an alarm already existent":
agenda-group "process alarm 2"
when:
$alarm_fact := AlarmFact( name == current_alarm_name)
then:
log("We got another alarm with name {0}".format($alarm_fact.name))
modify $alarm_fact:
count = $alarm_fact.count + 1

rule "We got a new alarm":
agenda-group "process alarm 3"
when:
not exists $alarm_fact := AlarmFact( name == current_alarm_name)
then:
log("We got a new alarm with name {0}".format(current_alarm_name))
insert AlarmFact(current_alarm_name)

[psantann]

The problem seems to be that a "not" before an exists does not apply to the whole expression:
DEBUG:intellect:intellect.Node.When :: Filter using the following list comprehension: matches = [fact for fact in policy.intellect.knowledge if reflection.is_instance(fact, klazz) and not (fact.name == current_alarm_name)]
So if I have another AlarmFact with the attribute name set to something different, it will evaluate the when clause to True and add one more instance of AlarmFact.