How do I the Force F8 / PAI event to execute

Question

Hi,
I have a screen that I enter a criteria on; next it brings up another screen with a table grid.  I select from the list the items that I am interested in then I hit the F8 key (execute) to bring up the selected data on another screen.
If the table grid only has one record, I want to selected the one record and hit the F8 key via code instead of having the user have to do it.  I think I have figured out how to get the one item selected via code (at least while I am in debug mode) but I do not know how to have the F8 executed via code so that the PAI event will trigger allowing all the rest of the necessary code to execute.
I appreciate your help.
Tom

Answer 1

Hi All,
Below is the final code that I used to occomplish my task.  I want to thank everyone of you for your help.  All of you triggered thought in this solution.  I had to use a memory parm id to help prevent a looping effect that I was getting when I went back to the transaction.  In addition, I reset the parm id to spaces in the 'BACK' button part of code so that I can get into the IF statement.
MODULE check_for_single_row OUTPUT.
  CONCATENATE 'SingleRowFlag' sy-uname sy-modno INTO g_parm_single_row_flag.
  GET PARAMETER ID g_parm_single_row_flag FIELD g_single_row_flag.
  IF sy-subrc <> 0.
    MESSAGE 'Parameter not found' TYPE 'I'.
  ENDIF.
  IF g_single_row_flag = '1'.
    EXIT.
  ENDIF.
  IF g_zrt_cnt = 1.
    temp_zrt = wa_zrt.
    temp_zrt-chkbx = 'X'.
    MODIFY i_zrt
      FROM temp_zrt
      INDEX 1
      TRANSPORTING chkbx.
    SET PARAMETER ID g_parm_Single_Row_Flag FIELD '1'.
    PERFORM zcart_transaction_art.
  ENDIF.
ENDMODULE.                 " check_for_single_row  OUTPUT
P.S.
I could not get this code to work but it helped get to what I have above.
Thanks again.
Tom
READ TABLE i_zrt INDEX 1.
i_zrt-chkbx = 'X'.
MODIFY i_zrt INDEX 1 TRANSPORTING chkbx.