A drl like the following with DataSample being annotated as @PropertyReactive ends up in an infinite loop even if it shouldn't.

rule 'Init'
when
$m: Model()
then
insert(new DataSample($m));
end

rule "Rule 1"
when
$m: Model()
$d: DataSample(model == $m)
then
modify($d)

{ addValue(Parameter.PARAM_A, 10.0) }

end

rule "Rule 2"
when
$m: Model()
$d: DataSample(model == $m, $v: values[Parameter.PARAM_A] > 9.0)
then
modify($d)

{ addMessage("Hello") }

end

rule "Data without messages"
salience -100
when
$m: Model()
$d: DataSample(model == $m, messaged == false)
then
end