Vista - Webservice complex type not working when call from C++.NET client app

HOW DOES THE TRUE BECOME FALSE IN THE WEBSERVICE?
WHY DOES IT WORK IN C#?

please read on

I have a webservice implemented using WCF with basicHttpBinding
(config is on the end of this message) The webservice itself is the
hello world example generated by wcf library so has this simple
interface:

[ServiceContract]
public interface IService1 {
[OperationContract]
string GetData(int value);

[OperationContract]
CompositeType GetDataUsingDataContract(CompositeType composite);
}

// Use a data contract as illustrated in the sample below to add
composite types to service operations
[DataContract]
public class CompositeType {
bool boolValue = true;
string stringValue = "Hello ";

[DataMember]
public bool BoolValue {
get { return boolValue; }
set { boolValue = value; }
}

[DataMember]
public string StringValue {
get { return stringValue; }
set { stringValue = value; }
}
}

I've setup a virtual directory on IIS and published the service to it.

I have 2 test clients which reference the service and call
GetDataUsingDataContract one is c#.net 2 and the other is C++.net 2

c# test app calls like this
simple.Service1 ser = new CsharpClient20.simple.Service1();
simple.CompositeType ct = new CsharpClient20.simple.CompositeType
();
ct.BoolValue = true;
ct.BoolValueSpecified = true;
ct.StringValue = "Boo";
simple.CompositeType result = ser.GetDataUsingDataContract(ct);

And works as expected

C++ test app calls like this
Service1^ service = gcnew Service1();
simple::CompositeType^ ct = gcnew simple::CompositeType();
ct->BoolValue = true;
ct->BoolValueSpecified = true;
ct->StringValue ="Boo";
simple::CompositeType^ ret = service->GetDataUsingDataContract(ct);

It calls the function which I can step into but in the webservice ct-Using the diagnostics tool the last message logged at
'ServiceLevelReceiveRequest' was

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<s:Header xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<To s:mustUnderstand="1" xmlns="http://schemas.microsoft.com/ws/
2005/05/addressing/none">http://bcs-dev001.blithesystems.local/
simpleTestWCFService/simpleTestWCFService.Service1.svc</To>
<Action s:mustUnderstand="1" xmlns="http://schemas.microsoft.com/ws/
2005/05/addressing/none">http://tempuri.org/IService1/
GetDataUsingDataContract</Action>
</s:Header>
<soap:Body>
<GetDataUsingDataContract xmlns="http://tempuri.org/">
<composite>
<StringValue xmlns="http://schemas.datacontract.org/2004/07/
simpleTestWCFService">Boo</StringValue>
<BoolValue xmlns="http://schemas.datacontract.org/2004/07/
simpleTestWCFService">true</BoolValue>
</composite>
</GetDataUsingDataContract>
</soap:Body>
</soap:Envelope>

which shows the value true - So HOW DOES THE TRUE BECOME FALSE IN THE
WEBSERVICE? and WHY DOES IT WORK IN C#? Anyone please this is sending
me crazy


Web service config:

<bindings>
<basicHttpBinding>
<binding name="basicHttpEndpointBinding">
<security mode="Transport">
<transport clientCredentialType="None" />
</security>
</binding>
</basicHttpBinding>
</bindings>

<behaviors>
<serviceBehaviors>
<behavior name="simpleTestWCFService.Service1Behavior">
<serviceCredentials>
<serviceCertificate findValue="*******"
x509FindType="FindBySubjectName" />
</serviceCredentials>
<dataContractSerializer maxItemsInObjectGraph="2147483647" />
<serviceMetadata httpGetEnabled="false" httpsGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true" />
</behavior>
</serviceBehaviors>
</behaviors>

<services>
<service name="simpleTestWCFService.Service1"
behaviorConfiguration="simpleTestWCFService.Service1Behavior">
<host>
<baseAddresses>
<add baseAddress="http://localhost:8731/
Design_Time_Addresses/simpleTestWCFService/Service1/" />
</baseAddresses>
</host>
<endpoint address="" binding="basicHttpBinding"
contract="simpleTestWCFService.IService1">
<identity>
<dns value="localhost"/>
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpsBinding"
contract="IMetadataExchange"/>
</service>
</services>
</system.serviceModel>