SELECT XMLQuery('copy $d := $se
                        modify (
                         for $i in $d/PmtInf/DrctDbtTxInf/DrctDbtTxInf/DrctDbtTx/MndtRltdInf/AmdmntInfDtls/OrgnlCdtrSchmeId/Id/PrvtId/Othr/SchemeNm                 
                         return   rename node $i as "SchmeNm"
                        )
                        return $d' passing v_domxml AS "se" RETURNING content)
       INTO v_domxml
       FROM dual;

 FUNCTION My_FUNCTION(     p         NUMBER  ) RETURN NUMBER IS
    BEGIN

          IF FALSE IS NULL
          THEN
             IF TRUE
             THEN
   SELECT XMLQuery('copy $d := $se
             modify (
              for $i in $d/PmtInf/DrctDbtTxInf/DrctDbtTx/MndtRltdInf/AmdmntInfDtls/OrgnlCdtrSchmeId/Id/PrvtId/Othr/SchemeNm                 
              return   rename node $i as "SchmeNm"
             )
             return $d' passing v AS "se" RETURNING content)
     INTO v
     FROM dual;
              END IF;
          ELSE
             IF TRUE IS NOT NULL
             THEN
                SELECT INSERTCHILDXMLAFTER(v, '/PmtInf/PmtTpInf','SeqTp', XMLTYPE('<CtgyPurp> <Cd>' || '</Cd>
                                                      </CtgyPurp>'))
                  INTO v
                  FROM dual;
             END IF;
          END IF;
    END My_FUNCTION;