title: scale cube Y with Animation webgl three.js
body: <p>Webgl Three.js tween and java script
  Im getting unexpected results from Tween the x or y property of an object, i have no errors and the object is scaling but with out animation.</p>
  
  <pre><code> var scale = {y:0};         
   var tween = new TWEEN.Tween( cube.scale.y ).to( { y: 10 }, 3000 ).easing(
   TWEEN.Easing.Cubic.Out ).start();
  </code></pre>
  
  <p>im trying to get the cube to stretch to the right height with the animation, but currently it just snaps straight to the scale-y.</p>