Develop smartform for multiple printing using control parameter .It is working fine for more than one entry sheet but it is not showing result for single when i execute it for single entry sheet its showing the print pop but after clicking on print preview it return on selection screen.
fm_name = 'ZML_SERVICE_ENTRY'.
CALL FUNCTION 'SSF_FUNCTION_MODULE_NAME'
EXPORTING
formname = fm_name
* VARIANT = ' '
* DIRECT_CALL = ' '
IMPORTING
fm_name = l_fmname
EXCEPTIONS
no_form = 1
no_function_module = 2
OTHERS = 3.
IF sy-subrc <> 0.
MESSAGE i398(00) WITH 'Error in displaying form output'(004).
ENDIF.
LOOP AT it_result.
w_cnt2 = sy-tabix .
CASE w_cnt2.
WHEN 1.
control_parameters-no_open = space.
* control_parameters-no_close = space.
control_parameters-no_close = 'X' .
WHEN w_cnt .
control_parameters-no_open = 'X' .
control_parameters-no_close = space .
WHEN OTHERS.
control_parameters-no_open = 'X' .
control_parameters-no_close = 'X' .
ENDCASE.
CALL FUNCTION l_fmname
EXPORTING
control_parameters = control_parameters
output_options = output
lblni_low = s_lblni-low
lblni_high = s_lblni-high
lbldt_fr = s_lbldt-low
lbldt_to = s_lbldt-high
sbnam_low = s_sbnam-low
sbnam_high = s_sbnam-high
sbna_low = s_sbna-low
sbna_high = s_sbna-high
kzabn_low = s_kzabn-low
kzabn_high = s_kzabn-high
ebeln_low = s_ebeln-low
ebeln_high = s_ebeln-high
TABLES
it_result = it_result
it_line = t_esll
EXCEPTIONS
formatting_error = 1
internal_error = 2
send_error = 3
user_canceled = 4
OTHERS = 5.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno.
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDLOOP.