title: Update a text field in BB OS 6 when a listener method is invoked
body: <p>For the GUI portion of my app, how could I update the RichTextField when my batteryStatusChange method is invoked that changes on the spot? </p>
  
  <p>I was thinking of calling a set method and then having RichTextField get that new number, but it will make a long list of lines unless I delete the textfield before I add a new one. </p>
  
  <p>Something like the battery percentage number under Device Information or the signal strength that changes on the spot.</p>
  
  <p><strong>Edit:</strong> Figured it out using setText</p>
  
  <pre><code>public void batteryStatusChange(int status) 
      {
          // TODO Auto-generated method stub
          if ((status &amp; DeviceInfo.BSTAT_LEVEL_CHANGED) != 0)
          {           
              batteryStatusField.setText(getBatteryLevel());      
  
          }
      }
  </code></pre>