Google Chart - All series on a given axis must be of the same data type - error

[miss786]

Dear all, I am experiencing the following error on the client-end -- All series on a given axis must be of the same data type. I have added in new control chartRangeSlider, which is causing this error, i think. I have checked the API documentation and I cannot seem to figure where I may be going wrong.

function drawVisualization(dataValues, chartTitle, columnNames, categoryCaption) {
if (dataValues.length < 1)
return;
var data = new google.visualization.DataTable();
data.addColumn('string', columnNames.split(',')[0]);
data.addColumn('number', columnNames.split(',')[1]);
data.addColumn('string', columnNames.split(',')[2]);
data.addColumn('datetime', columnNames.split(',')[3]);
data.addColumn('number', columnNames.split(',')[4]);

    for (var i = 0; i < dataValues.length; i++) {
	
        var date = new Date(parseInt(dataValues\[i\].Date.substr(6), 10));
        data.addRow(\[dataValues\[i\].ColumnName, dataValues\[i\].Value, dataValues\[i\].Type, date, dataValues\[i\].ID\]);
    }

    // Define a Pie chart
    var pie = new google.visualization.ChartWrapper({
        'chartType': 'LineChart',
        'containerId': 'PieChartContainer',
        'options': {
            'width': 950,
            'height': 450,
            'legend': 'right',

            //'hAxis': {
             //'format': "dd-MMM-yyyy",
            // 'maxValue': new Date (2014, 03, 07), 'minValue': new Date (2014, 02, 20), 
           //  'viewWindow':{'max': new Date (2014, 03, 17)},
           // },
             
            'title': chartTitle,
            'chartArea': { 'left': 100, 'top': 100, 'right': 0, 'bottom': 100 },
            'pieSliceText': 'label',
            'tooltip': {isHtml: true}
        },
        'view': { 'columns': \[4, 1\] }
    });

    // Create a date range slider  
    var myIdSlider = new google.visualization.ControlWrapper({  
    'controlType': 'ChartRangeFilter',  
    'containerId': 'control\_div',  
    'options': {  
        'filterColumnLabel': columnNames.split(',')\[4\],
        'filterColumnIndex': '4',
        'chartView': { 'columns': \[4, 1\] },
        }
      }); 
    new google.visualization.Dashboard(document.getElementById('PieChartExample')).bind(\[myIdSlider\], \[pie\]).draw(data);
}

</script>