SelectOption interne Tabelle eine Klassenmethode übergeben

Code: Alles auswählen.

CLASS cl_test DEFINITION
METHODS: test1 IMPORTING it_test TYPE ????.
ENDCLASS.

CLASS cl_test IMPLEMENTATION
  METHOD test1.
    SELECT * FROM noek INTO it_noek WHERE noek-kostl IN it_test.
  ENDMETHOD.

DATA:
  obj_ref TYPE REF TO cl_test.

CREATE OBJECT obj_ref.

START-OF-SELECTION
  SELECT-OPTION so_kost FOR noek-kostl.

CALL METHOD obj_ref->test1
  EXPORTING so_kost.

Code: Alles auswählen.

SELECT-OPTIONS:
  pr_kostl TYPE kostl.

CLASS lcl_test DEFINITION
  METHODS: 
    read_noek IMPORTING ir_kostl TYPE STANDARD TABLE.
ENDCLASS.

CLASS cl_test IMPLEMENTATION
  METHOD read_noek.
    SELECT * FROM noek INTO it_noek WHERE noek-kostl IN it_kostl.
  ENDMETHOD.
ENDCLASS.

CALL METHOD lo_test->read_noek( pr_kostl ).

Code: Alles auswählen.

SELECT-OPTIONS:
  pr_kostl TYPE kostl.

TYPES:
  tr_kostl TYPE RANGE OF kostl.

CLASS lcl_test DEFINITION
  METHODS: 
    read_noek IMPORTING ir_kostl TYPE tr_kostl.
ENDCLASS.

CLASS cl_test IMPLEMENTATION
  METHOD read_noek.
    SELECT * FROM noek INTO it_noek WHERE noek-kostl IN it_kostl.
  ENDMETHOD.
ENDCLASS.

DATA: 
  gr_kostl TYPE tr_kostl.

* Mit Feldsymbol hat es bei mir nicht geklappt... :-(
gr_kostl[] = pr_kostl[].
CALL METHOD lo_test->read_noek( gr_kostl ).