title: MDD validation bug with >=
body: <p>I use this validation rule in the MDD:</p>
  
  <pre><code>compare(maxSizeOfGroup, minSizeOfGroup) {maxSizeOfGroup &gt;= minSizeOfGroup} :
  "The maximum number of people can't be smaller than the minimum number!"
  </code></pre>
  
  <p>Yet I see the error message I defined when I choose both to be the same number.</p>
  
  <p>Btw, in the <a href="http://www.makumba.org/page/ValidationRules" rel="nofollow">documentation</a> it says to use ">=" but that gives the error
   "[...] unexpected char: '\' [...]"</p>