Dear Vivek,
Implement IF_FPM_GUIBB_FORM_EXT interface in your form feeder class. Write below code in NEEDS_CONFIRMATION method.
data : lo_confobj type ref to cl_fpm_confirmation_request,
lt_conf_text type string_table,
lv_conf_txt type string,
lv_window_title type string.
CASE io_event->mv_event_id.
WHEN 'FPM_SAVE'.
lv_conf_txt = text-001.
lv_window_title = 'Your required titile'.
append lv_conf_txt to lt_conf_text.
create object lo_confobj
exporting
it_confirmation_text = lt_conf_text
iv_window_title = lv_window_title.
if lo_confobj is not initial.
eo_confirmation_request = lo_confobj.
endif
.ENDCASE.
Create a text element for 001. Which contains the confirmation message in the popup.
Note: For this requirement no need to create a dialog box.:)
Hope this will helps you.
Regards,
Naga