function updateCharts2() {
var spreadsheetId = 'xxx';
var ss = SpreadsheetApp.openById(spreadsheetId);
var dataSheet = ss.getSheetByName('Actuals');
var dataRange = dataSheet.getRange("A1:K180");
var chartSheet = ss.getSheetByName('Actuals');
var chart = chartSheet.getCharts()[0];
chart = chart.modify()
.clearRanges()
.addRange(dataRange)
.build()
chartSheet.updateChart(chart);
}