gistfile1.m

    DDXMLDocument *document = [[DDXMLDocument alloc] initWithData:_connectionData options:0 error:NULL];
    DDXMLElement *rootElement = [document rootElement];
    [document release];    
    
    NSUInteger statusCode = [_response statusCode];
    if (statusCode >= 200 && statusCode < 400) {
        NSString *xpath = @"/soap:Envelope/soap:Body/myns:CheckCustomerResponse/myns:CheckCustomerResult"; 
        NSArray *elements = [rootElement nodesForXPath:xpath error:&error]; // array of DDXMLElements. See DDXMLElement.h and DDXMLElementAdditions.h
        
    }