title: AttributeError: 'function' object has no attribute 'universe'
body: <p>I get the following error, when I run the program. I have attached my error and program as follow. What's wrong with my program?</p>
  
  <pre><code>        error_x= x - x_old
          error_y= y - y_old
          reglage.input['position'] = int(x)
          reglage.input['vitesse'] = int(error_x - error_precedent_x)
          reglage.compute()
          x_angle=reglage.output['angle']
          print x_angle
          reglage.input['position'] = int(y)
          reglage.input['vitesse'] = int(error_y - error_precedent_y)  #dy/dt
          reglage.compute()
          y_angle=reglage.output['angle']
          print y_angle
  </code></pre>
  
  <p>value = np.fmax(value, np.var.universe.min())
  AttributeError: <strong>'function' object has no attribute 'universe'</strong></p>