2 dimentional array as a parameter for SoapHttpClientProtocol->Inv

[Max M. Power]

I'm getting an InvalidOperatio nException calling Invoke with a method
parameter object array that contains a two dimentional string array. More
stack trace output below:

// Create two dimentional array.
System::String* tda[,] = new System::String*[2,2];
tda[0,0] = "lastName";
tda[0,1] = "Power";
tda[1,0] = "firstName" ;
tda[1,1] = "Max";

// Create web method parameters including two dimentional array.
System::Object* setParams = {"TestApp", "abc123", tda};

// The next line causes a System.InvalidO perationExcepti on generating the
XML document. The specified cast was not valid. at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriter1.Write 5_set(Object[]p)

SoapHttpClientP rotocol->Invoke(S"set ", setParams);

I'm using the two dimentional array because I'm trying to generate a SOAP
request body that includes an array:

<SOAP-ENV:Body>
<m:set xmlns:m="urn:Sp ecialStation"
SOAP-ENV:encodingSty le="http://schemas.xmlsoap .org/soap/encoding/">
<timeValue xsi:type="xsd:s tring">19191929 29</timeValue>
<spaceNumber
xsi:type="xsd:s tring">{87AB126 q-B19E-4F3B-9784-3F5D6k3D4F9E}</spaceNumber>
<ns2:submittedP roperties
xmlns:ns2="http ://schemas.xmlsoap .org/soap/encoding/" xsi:type="ns2:A rray"
ns2:arrayType=" xsd:ur-type[6]">
<item xmlns:ns3="urn: xml-soap-demo" xsi:type="ns3:p roperty">
<attribute xsi:type="xsd:s tring">First.Va lue</attribute>
<value xsi:type="xsd:s tring">Value123 </value>
</item>
<item xmlns:ns3="urn: xml-soap-demo" xsi:type="ns3:p roperty">
<attribute xsi:type="xsd:s tring">Second.V alue</attribute>
<value xsi:type="xsd:s tring">Value456 </value>
</item>
<item xmlns:ns3="urn: xml-soap-demo" xsi:type="ns3:p roperty">
<attribute xsi:type="xsd:s tring">Third.Va lue</attribute>
<value xsi:type="xsd:s tring">Value789 </value>
</item>
<item xmlns:ns3="urn: xml-soap-demo" xsi:type="ns3:p roperty">
<attribute xsi:type="xsd:s tring">Forth.Va lue</attribute>
<value xsi:type="xsd:s tring">Value012 </value>
</item>
<item xmlns:ns3="urn: xml-soap-demo" xsi:type="ns3:p roperty">
<attribute xsi:type="xsd:s tring">Fifth.Va lue</attribute>
<value xsi:type="xsd:s tring">Value345 </value>
</item>
<item xmlns:ns3="urn: xml-soap-demo" xsi:type="ns3:p roperty">
<attribute xsi:type="xsd:s tring">Sixth.Va lue</attribute>
<value xsi:type="xsd:s tring">Value678 </value>
</item>
</ns2:submittedPr operties>
</m:set>
</SOAP-ENV:Body>