title: Invalid syntax with setx
body: <p>I used the <code>setx</code> command to set <code>OGRE_HOME</code>:</p>
  
  <pre><code>setx OGRE_HOME D:\Program Files\OgreSDK
  </code></pre>
  
  <p>Now I need to change to value of <code>OGRE_HOME</code>.
  How can I search all the values I have set?
  If I run the command again, it shows that:</p>
  
  <pre><code>ERROR: Invalid syntax. Default option is not allowed more than '2' time(s).
  </code></pre>