函数：
DYNP_VALUES_READ（Read screen field values before PAI field transport）
F4IF_INT_TABLE_VALUE_REQUEST
效果图：
误区：
P_CONNID帮助中直接如下：
SELECT ……
WHERE werks = p_werks.
如果用户填写p_werks 未回车而直接点p_matnr的帮助，p_werks此时还为空.
本例子代码：
文本
REPORT zlm_test_043.
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE text-001.
PARAMETERS: p_werks TYPE werks_d,
p_matnr TYPE matnr.
SELECTION-SCREEN END OF BLOCK b1.
START-OF-SELECTION.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_matnr.
PERFORM frm_f4.
*&-------------------------------------------------------------------
*&搜索帮助
*&-------------------------------------------------------------------
FORM frm_f4.
TYPES: BEGIN OF values,
matnr TYPE matnr,
maktx TYPE maktx,
END OF values.
DATA: progname TYPE sy-repid,
dynnum TYPE sy-dynnr,
dynpro_values TYPE TABLE OF dynpread,
field_value LIKE LINE OF dynpro_values,
values_tab TYPE TABLE OF values.
progname = sy-repid.
dynnum = sy-dynnr.
CLEAR: field_value, dynpro_values.
"指定需要取值的屏幕字段
field_value-fieldname = 'P_WERKS'. "
APPEND field_value TO dynpro_values.
"获取屏幕 P_WERKS 字段的值
CALL FUNCTION 'DYNP_VALUES_READ'
EXPORTING
dyname = progname
dynumb = dynnum
translate_to_upper = 'X'
TABLES
dynpfields = dynpro_values.
"根据屏幕输入值进行进一步搜索
READ TABLE dynpro_values INDEX 1 INTO field_value.
SELECT makt~matnr makt~maktx
FROM makt
INNER JOIN marc ON marc~matnr = makt~matnr
INTO CORRESPONDING FIELDS OF TABLE values_tab
WHERE werks = field_value-fieldvalue.
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
EXPORTING
retfield = 'MATNR' "需要回传的字段
dynpprog = progname
dynpnr = dynnum
dynprofield = 'MAKTX' "需要显示的字段
window_title = '情选择物料 '
value_org = 'S'
TABLES
value_tab = values_tab.
ENDFORM. "frm_f4