Mtom issue with gsoap client

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C++

Java

webservice

I written my java webserver.i deployed in jboss.
and i used gsoap to generated the c++ code and i calling the webservice using c++.
but it failed to send the attachments

my java code:

@MTOM
@SOAPBinding(style = Style.DOCUMENT, use = Use.LITERAL)
@WebService(serviceName = "DataHand")
public class DataHand
{
    public static final Log logger = LogFactory.getLog("com.tkd.sapphirews");
    @WebMethod(operationName = "Dharma")
    public String Dharma(Try obj) throws SOAPException
    {

        return "Hello ";
    }
}

public class Try 
{
   private  DataHandler content;
   private String id;
   
    public DataHandler getContent() {
        return content;
    }   

    public void setContent(DataHandler content) {
        this.content = content;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }       
}

MY C++ code:

ns1__Dharma obj1;
	
	obj1.arg0 = new ns1__try();
	obj1.arg0->content = new xsd__base64Binary ();
	obj1.arg0->content->id = NULL;
	obj1.arg0->content->options = NULL;
	obj1.arg0->content->type = "text/html";
	obj1.arg0->content->__ptr = (unsigned char *)"Dharmaraj is not able to do anything";
	obj1.arg0->content->__size = 20;
	obj1.arg0->id = new string();
	obj1.arg0->id->assign("Welcome");
	ns1__DharmaResponse objRes;
	DataHandPortBindingProxy obj;
	if(obj.Dharma(&obj1, &objRes) != SOAP_OK)
	{
		printf("%s\n", obj.soap_fault_string());
	}

Error messag is:

javax.xml.bind.UnmarshalException
 - with linked exception:
[com.ctc.wstx.exc.WstxParsingException: Undeclared namespace prefix "xop"
 at [row,col {unknown-source}]: [2,336]]
Press any key to continue . . .

Note:
IF i comment

obj1.arg0->content->type = "text/html";

this line its soap call success but its not sending data as attachment..