Use of Resnucle and Part-thr

Dear FLUKA experts,

Could someone tell me how to score residual nuclides induced by ions
without contribution from secondaries.
I am trying to score residual nuclide in a target made of iron induced
by 400MeV/u carbon ion using resnucle card in a following way

RESNUCLE 3. -30. TARCYL01 1.88496res1

In order to disregard contribution from secondary particles, I put

PART-THR -10.0 1.0 @LASTPAR

Then I found no residual nuclides scored in the unit -30. When I turn
off PART-THR card, scoring was successful.
Many thanks in advance.

Sincerely,
Ogawa

-- 
**************************************************
       ATLAS Detector Operation Group
           Department of Physics
 European Organization for Nuclear Research(CERN)
--------------------------------------------------
 Department of Nuclear Engineering and Management
        Graduate School of Engineering
                 The University of Tokyo
            Tatsuhiko Ogawa
     E-mail:  ogawa_at_n.t.u-tokyo.ac.jp
              togawa_at_cern.ch
        Tel:   +81-3-5841-2905
 Facsimile :    +81-3-3813-2010
    Address: 2-11-16 Engineering Bld.12th Room421
             Yayoi Bunkyo-ku, Tokyo  113-0032
**************************************************