ok this works, BUT using a DSL it fails again.

DSL:

[condition][]is a Person=Person()
[condition][]- female=sex == "f"
[condition][]- male=sex == "f"
[condition][]- age {value}=age=={value}

DSLR:

rule
    when
         ($person: is a Person
               - male
               - age 60
         or
         $person: is a Person
               - female
               - age 70)
    then
end

resolves to:
                                |
                               \/
.... ($person: Person( , sex="m", age == 60)
     or
      $person: Person(sex="f", age == 70))

the "," seems to be the problem ..