Android to Javascript Call in Phonegap

App.java

public class App extends DroidGap {
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    super.loadUrl("file:///android_asset/www/index.html");

    Thread t = new Thread() {
      public void run() {
	try {
	  for (int i = 0; i < 10; i++) {
	    sleep(5000);
	    sendValue("value " + i, "another vlaue " + i);
	  }
	} catch (Exception e) {
	  e.printStackTrace();
	}
      }
    };
    t.start();
  } 

  public void sendValue(String value1, String value2) {
    JSONObject data = new JSONObject();
    try {
      data.put("value1", value1);
      data.put("value2", value2);
    } catch (JSONException e) {
      Log.e("CommTest", e.getMessage());
    }
    
    String js = String.format("window.plugins.appcomm.updateValues('%s');", data.toString());
    this.sendJavascript(js);
  }
}

appcomm.js

var AppComm = function(){};

AppComm.prototype.updateValues = function(json) {
   var data = window.JSON.parse(json);
   $("#pluginResult").html(data.value1 + ", " + data.value2);
};

cordova.addConstructor(function() {
   cordova.addPlugin("appcomm", new AppComm());
});