ABAP : regular expression

DATA : lv_string(20) VALUE 'ฟหกMK06MSTO1711-333ฟหก',
       count TYPE i,
       char_1.

do strlen( lv_string ) times.
    count = sy-index - 1.
    char_1 = lv_string+count(1).
*    FIND REGEX '[0-9a-zA-Z-]' IN char_1. " in
    FIND REGEX '[^0-9a-zA-Z-]' IN char_1. " not in
    IF sy-subrc = 0.
        WRITE  char_1.
    ENDIF.
ENDDO.

FIND ALL OCCURRENCES OF
  REGEX '[^0-9a-zA-Z-]' IN 'ฟหกMK06MSTO1711-333ฟหก' " if no char in ENG catain it will be print pass
  MATCH COUNT sy-tabix.
IF sy-subrc = 0.
    WRITE / 'pass'.
ENDIF.