The following code shows the syntax of the FM 'DYNP_VALUES_UPDATE'.
*Internal table to store dy dynpro fields and values DATA: dynpfields LIKE dynpread OCCURS 5 WITH HEADER LINE. DATA: l_stepl LIKE sy-stepl. REFRESH dynpfields. CLEAR dynpfields. dynpfields-fieldname = 'SCREENFIELD1-COL1'. "Screen field name dynpfields-fieldvalue = 10. "New value dynpfields-stepl = l_stepl. "Step loop for table controls APPEND dynpfields. CALL FUNCTION 'DYNP_VALUES_UPDATE' EXPORTING dyname = 'SAPLBDT_GMGR' "Program name dynumb = '0270' "Screen number TABLES dynpfields = dynpfields EXCEPTIONS OTHERS = 0.