Code at Infoset SQ02 - Start of Selection - not working

Question

I have a code at SQ02 infoset START-OF-SELECTION:
select bukrs
  into table i_bukrs
  from t001
  where bukrs in ('SP$00007').
if sy-subrc = 0.
endif.
where SP$00007 is a select-option at the query selection screen.
This coding is not working. It is always returning sy-subrc 4. How do I acces a select option form the query start of selection?
Where I am doing wrong? I have got the 'SP$00007' from the generated code of query.
If I try like this it gives me a syntax error:
where bukrs in SP$00007.
Any idea what I am doing wrong?

Answer 1

The Solution:
DATA cond_syntax TYPE string.
CONCATENATE 'BUKRS' 'IN SP$00007'
            INTO cond_syntax SEPARATED BY space.
SELECT bukrs
  INTO TABLE i_bukrs
  FROM t001
  WHERE (cond_syntax).
IF sy-subrc = 0.
  LOOP AT i_bukrs INTO wa_bukrs.
    AUTHORITY-CHECK OBJECT 'J_B_BUKRS'
             ID 'BUKRS' FIELD wa_bukrs-bukrs.
    IF sy-subrc <> 0.
      MESSAGE s000(z_zzz_ca_messages)
      WITH
      'You do not have authorization to view Company Code '
       wa_bukrs-bukrs
       ' data.'.
      LEAVE LIST-PROCESSING.
    ENDIF.
  ENDLOOP.
ENDIF.
If there is a better way please let me know?