title: Fluxus - undefined identifier gl and gh keeps returning 0.0
body: <p>I'm trying to get the scripts running of the hackpact of mndl.hu but I keep running in to the error.</p>
  
  <pre><code>undefined identifier gl
  </code></pre>
  
  <p>I googled and came across the follow</p>
  
  <pre><code>(define (gl n)
         (log (+ 1 (gh n))))
  </code></pre>
  
  <p>But gh keeps returning 0.0 so simply replacing gl with gh won't work ether.</p>