FUNCTION {{p}}trans_fee
  IMPORTING
    iv_lang_pair  TYPE string
    iv_word_count TYPE i
    iv_express    TYPE abap_bool
    iv_certified  TYPE abap_bool
  EXPORTING
    ev_fee        TYPE decfloat34
  EXCEPTIONS
    invalid_lang_pair
    invalid_word_count.

  IF iv_lang_pair <> 'STD' OR iv_lang_pair <> 'RARE'.
    RAISE invalid_lang_pair.
  ENDIF.

  IF iv_word_count < 1.
    RAISE invalid_word_count.
  ENDIF.

  DATA(lo_pricer) = NEW {{p}}trans_pricer( ).
  ev_fee = lo_pricer->calculate_fee(
    iv_lang_pair  = iv_lang_pair
    iv_word_count = iv_word_count
    iv_express    = iv_express
    iv_certified  = iv_certified ).

ENDFUNCTION.