XmlTextWriter class question

[nemaroller]

Using the XmlTextWriter class, how would I write out the line bolded below with the results shown below:

<?xml version="1.0" ?>
<?qbxml version="2.0"?>
<QBXML>
  <QBXMLMsgsRq onError = "stopOnError">
    <CustomerAddRq requestID = "1">
      <CustomerAdd>
        <Name>Some Guy</Name>
      </CustomerAdd>
    </CustomerAddRq>
  </QBXMLMsgsRq>
</QBXML>

I am trying to start an element but also include addt'l information...
namely, onError = "stopOnError"
If I use

myXml.WriteStartElement("QBXMLMsgsRq onError='stopOnError'", Nothing)

I get thiswhere the ending tag also includes the extra info)

<?xml version='1.0' ?>
<QBXML>
  <QBXMLMsgsRq onError='stopOnError'>
    <CustomerAddRq requestID='1'>
      <CustomerAdd>
        <Name>Karl</Name>
      </CustomerAdd>
    </CustomerAddRq requestID='1'>
  </QBXMLMsgsRq onError='stopOnError'>
</QBXML>ML>

Now obviously I know why it makes the end tag the same...but I can't figure out how to get around that...
I want the bolded line above to just read </QBXMLMsgsRq>. In case you are wondering, this is xml structured request for adding a customer to Intuit's Quickbooks.