soap request的参数无法发送

Question

soaprequest 应为：
SoapRequest = "<?xml version="&CHR(34)&"1.0"&CHR(34)&" encoding="&CHR(34)&"utf-8"&CHR(34)&"?>"& _
    "<soap:Envelope xmlns:xsi="&CHR(34)&"http://www.w3.org/2001/XMLSchema-instance"&CHR(34)&" "& _
    "xmlns:xsd="&CHR(34)&"http://www.w3.org/2001/XMLSchema"&CHR(34)&" "& _
    "xmlns:soap="&CHR(34)&"http://schemas.xmlsoap.org/soap/envelope/"&CHR(34)&">"& _
    "<soap:Body>"& _
    "<helloWorld xmlns="&CHR(34)&"http://hello/"&CHR(34)&">"& _
    "<param0 xsi:type="&CHR(34)&"xsd:string"&CHR(34)&">Tom</param0>"& _
    "</helloWorld>"& _
    "</soap:Body>"& _
   "</soap:Envelope>"