In search help i am facing problem

Question

created search help using below function module . here element list is like this
in search help 2 fields is there and data is like this
arbpl werks
y 1
y 2
x 1
x 2
x 3
z 1
z 3
a 1
b 1
if i select x and 2 it taking the value as x and 1 how to solve this problem
would any body solve this problem?
i write the code like this
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_arbpl.
select arbpl werks from zpces into corresponding fields of table
itab .
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
EXPORTING
DDIC_STRUCTURE = 'CRHD'
retfield ='ARBPL'
PVALKEY = ' '
DYNPPROG = sy-repid
DYNPNR = sy-dynnr
DYNPROFIELD = 'P_ARBPL'
STEPL = 0
WINDOW_TITLE = 'title'
VALUE = ' '
VALUE_ORG = 'S'
MULTIPLE_CHOICE = ' '
DISPLAY = 'F'
CALLBACK_PROGRAM = ' '
CALLBACK_FORM = ' '
MARK_TAB =
IMPORTING
USER_RESET =
tables
value_tab = itab
FIELD_TAB = dynfields
RETURN_TAB = return
DYNPFLD_MAPPING = dynmap
EXCEPTIONS
PARAMETER_ERROR = 1
NO_VALUES_FOUND = 2
OTHERS = 3
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
read table return with key fieldname = 'P_ARBPL'.
dynfields-fieldname = return-retfield.
dynfields-fieldvalue = return-fieldval.
append dynfields.
itab-arbpl = return-fieldval.
read table itab from itab.
read table itab with key arbpl = return-fieldval.
dynfields-fieldname = 'P_WERKS'.
dynfields-fieldvalue = itab-werks.
append dynfields.
Update the dynpro values.
call function 'DYNP_VALUES_UPDATE'
exporting
dyname = sy-cprog
dynumb = sy-dynnr
tables
dynpfields = dynfields
exceptions

Answer 1

Change your code as below.
dynfields-fieldname = return-retfield.
dynfields-fieldvalue = return-fieldval.
append dynfields.
* itab-arbpl = return-fieldval.
* read table itab from itab.
<b>read table itab index return-recordpos.</b>
dynfields-fieldname = 'P_WERKS'.
dynfields-fieldvalue = itab-werks.
append dynfields.
Hope this helps.
Manoj