title: How to add and multiply text boxes together in google apps script?
body: <p>How do I add the following text boxes together with the logic below?</p>
  
  <pre><code>oneTextBox = $120.00,
  twoTextBox = .03*oneTextBox,
  threeTextBox = oneTextBox + twoTextBox
  </code></pre>
  
  <p>I would also like the units of each text box to be in dollars ($).</p>
  
  <hr>
  
  <pre><code>function doGet(e) {
    var app = UiApp.createApplication();
  
    var VertPanel = app.createVerticalPanel().setId('VertPanel');
  
    var oneTextBox = app.createTextBox().setText("$120.00").setId("oneTextBox").setName("oneTextBox");
    var twoTextBox = app.createTextBox().setId("twoTextBox").setName("twoTextBox");
    var threeTextBox = app.createTextBox().setId("threeTextBox").setName("threeTextBox");
  
    app.add(VertPanel);
    VertPanel.add(oneTextBox).add(twoTextBox).add(threeTextBox);
  
    return app;
  }
  </code></pre>