title: NXOpen.NXException: Missing section string
body: <p>I'm working with OpenNX Python to create a gear tooth but when executing the source code with NX Journal the following error arises:</p>
  <blockquote>
  <p>NXOpen.NXException: Missing section string</p>
  </blockquote>
  <p>How to fix it? This is the line where the error is located:</p>
  <pre><code>section1.AddToSection(rules1, self.section[0].body, NXOpen.NXObject.Null, NXOpen.NXObject.Null, helpPoint1,NXOpen.Section.Mode.Create, False)
  </code></pre>