fix gadget_complex_demo_form.js

demo/gadget_complex_demo_form.js

 /*jslint nomen: true, maxlen: 200, indent: 2*/
-/*global rJS, console, window, document, RSVP, jIO*/
+/*global rJS, console, window, document, RSVP*/
 
-(function (window, rJS, jIO) {
+(function (window, rJS) {
   "use strict";
 
   function transform_olap_dimensions(g, dimensions) {
@@ -128,9 +128,11 @@
           used_dimensions = [];
           mod = JSON.parse(modification_dict[scope]);
           for (i = 0; i < mod.length; i += 1) {
+            if (mod[i] !== undefined) {
               dimension = g.props.hierarchies[mod[i]].dimension;
               used_dimensions.push(dimension);
             }
+          }
           g.props.axes[scope] = used_dimensions;
         }
       }
@@ -142,4 +144,4 @@
       ]);
     });
 
-}(window, rJS, jIO));
+}(window, rJS));
\ No newline at end of file