[ABAP] Progress indicator

SELECT * FROM sflight INTO TABLE @DATA(flights).

LOOP AT flights INTO DATA(flight).
  WAIT UP TO 1 SECONDS.
  cl_progress_indicator=>progress_indicate( i_text               = |Processing flight { flight-connid } as { sy-tabix } / { lines( flights ) }|
                                            i_processed          = sy-tabix
                                            i_total              = lines( flights )
                                            i_output_immediately = abap_true ).
ENDLOOP.