title: Add a maximum length property on an XML attribute?
body: <p>I have this XML</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;xs:schema xmlns:z="#RowsetSchema" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema"&gt;
      &lt;xs:element name="data"&gt;
          &lt;xs:complexType&gt;
              &lt;xs:sequence&gt;
                  &lt;xs:element maxOccurs="unbounded" name="row"&gt;
                      &lt;xs:complexType&gt;
                          &lt;xs:attribute name="TestField" type="xs:string" use="required" /&gt;
                      &lt;/xs:complexType&gt;
                  &lt;/xs:element&gt;
              &lt;/xs:sequence&gt;
          &lt;/xs:complexType&gt;
      &lt;/xs:element&gt;
  &lt;/xs:schema&gt;
  </code></pre>
  
  <p>How do I add a maximum length property on the TestField attribute?</p>