title: three js change radius of sphere with dat gui?
body: <p><a href="http://mrtn.ch/3D/13_06_27_gui_03.html" rel="nofollow">http://mrtn.ch/3D/13_06_27_gui_03.html</a></p>
  
  <p>started analysing example files and now I'm wondering how to properly adress the radius of my sphere with the dat gui slider. I can move the slider but the sphere keeps the initial radius. What's wrong with my code?</p>
  
  <p>Thanks for your help!</p>