title: SAPUI5 Line Chart (vizframe) Formatter function not found
body: <p>I want to <code>format</code> my <code>time axis</code> at the <code>sapui5 line chart</code> with a <code>formatter</code>. With the following code </p>
  
  <pre><code>dimensions: [{
                  name: 'time',
                  value: "{path:'_time', formatter: '" + Formatter.formatTime + "'}"
              }],
  </code></pre>
  
  <p>appears this error:</p>
  
  <pre><code>formatter function function (time) {
          console.warn(time);
          var r = time.toLocaleTimeString();
          return r;
      } not found! -
  </code></pre>
  
  <p>My formatter.js looks like this:</p>
  
  <pre><code>sap.ui.define([
  ], function () {
  "use strict";
  var me = this;
  return {
      splitThingType: function (type) {
          var t = type.split(':')[1];
          return t;
      },
  
      formatTime: function (time) {
          console.warn(time);
          var r = time.toLocaleTimeString();
          return r;
      }
  }
  });
  </code></pre>
  
  <p>If I don't use a formatter the chart works but doesn't look that good.</p>