google.visualization.events.addListener(Col2Pick, 'ready', function(event) {
    columnChart1.setDataTable( google.visualization.data.group(table.getDataTable(), [0], [{'column': 2, 'aggregation': google.visualization.data.sum, 'type': 'number'}]));
        columnChart1.draw();
});

google.visualization.events.addListener(Col2Pick, 'statechange', function(event) {
    columnChart1.setDataTable( google.visualization.data.group(table.getDataTable(), [0], [{'column': 2, 'aggregation': google.visualization.data.sum, 'type': 'number'}]));
        columnChart1.draw();
});

google.visualization.events.addListener(Col2Pick, 'ready', function(event) {
    columnChart2.setDataTable( google.visualization.data.group(table.getDataTable(), [1], [{'column': 2, 'aggregation': google.visualization.data.sum, 'type': 'number'}]));
    columnChart2.draw();
});

  google.visualization.events.addListener(Col2Pick, 'statechange', function(event) {
    columnChart2.setDataTable( google.visualization.data.group(table.getDataTable(), [1], [{'column': 2, 'aggregation': google.visualization.data.sum, 'type': 'number'}]));
    columnChart2.draw();
});