weird issue with createElement

Hello had written a small function for xml creation.

CreateElementNode(std::wstring  name,std::wstring  value)
{	
	if(pXMLRootElem!=NULL)
	{
		MSXML::IXMLDOMElementPtr pXMLChild1 =  pDocument->createElement(name.c_str()); 
		 if(pXMLChild1)
		 {	
			  if(!value.empty())
				pXMLChild1->Puttext(value.c_str()); 			 
			 pXMLChild1 = pXMLRootElem->appendChild(pXMLChild1);
		}
		 return E_FAIL;
	}
	else
		 return E_FAIL;
	return S_OK;
}

and I am calling this function like

 CString szStart = _T("This      name");
 xml1.CreateElementNode((LPCWSTR)szStart,(LPCWSTR)szStart,pParent1);	

And here comes the actual problem when i remove space between This and nameeverything works fine . But with space this get crashed in pDocument->createElement . here i am confused why i tried with BSTR AllocSysString etc but in all cases with space pDocument->createElement is getting crashed anyone know what is the issue here.

I am using Dom Parser here

Thanks

Rupesh Shukla