function - Passing in a three.js object into javascript -

so basically, making robot object in javascript using three.js , passing in three.js scene variable object using draw robot parts through array- reason, though, scene object not pass function (it won't draw)- missing javascript functions?

function robot(sc){     this.sc=sc;      var robtexture = new three.meshlambertmaterial({         map: three.imageutils.loadtexture('tex/dmetal.png')     });      this.parts = [];      var current;      //make body      current=new three.mesh(new three.cubegeometry(10,15,10), robtexture);      this.parts.push(current);      alert("hit");      //make legs }  robot.prototype.draw = function() {     (x in this.parts){         this.sc.add(x);         alert("hit");     } } 

maybe works more intended:

robot.prototype.draw = function() {   (x in this.parts){     this.sc.add(this.parts[x]); // < - spot difference :)     alert("hit");   } }