art.addData(values,label);
                        } else {
                            myLineChart.addData(values,"");
                        }

                        // Remove the first chart item if more than max_datapoints displayed
                        if (myLineChart.datasets[0].points.length >= MAX_DATAPOINTS) {
                            myLineChart.removeData()
                        }

                    }



                }

            } else if (xmlHTTP.readyState==4 && xmlHTTP.statu