连接bw系统olap4j无法设置参数

使用Olap4j(比较慢，求推荐好用的olap连接工具)连接sap的BW系统查找数据，单使用mdx语句会报参数未设置错误。
用fidler捕捉request发现parameter并未设置：

 <?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope
    xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <soapenv:Body>
        <Execute xmlns="urn:schemas-microsoft-com:xml-analysis">
        <Command>
        <Statement>
           <![CDATA[
SELECT  NON EMPTY { [0SALES_DIST__0CUST_GRP2].[LEVEL01].Members  } ON COLUMNS, NON EMPTY { [0CALMONTH].[LEVEL01].Members } ON ROWS FROM [ZQD_C28/ZQD_C28_Q0001] WHERE [0CALMONTH].[201503]]]>
         </Statement>
        </Command>
        <Properties>
          <PropertyList>
            <Catalog>ZBF_C51</Catalog>
            <DataSourceInfo>SAP_BW</DataSourceInfo>
            <Format>Multidimensional</Format>
            <AxisFormat>TupleFormat</AxisFormat>
          </PropertyList>
        </Properties>
        <Parameters>
               <Parameter>
               </Parameter>
        </Parameters></Execute>
</soapenv:Body>
</soapenv:Envelope>

用OLAP4J怎样设置参数？