function doGet(){

  //Get the data from spreadsheet

  ssID ='SpreadsheetID';//Change it ro yours

  var SS = SpreadsheetApp.openById(ssID);

  var sheet = SS.getSheets()[0];

  var data = sheet.getRange('A1:G7').getValues();

  

  //Build data table

  var dataTable = Charts.newDataTable();

  

  //Add Column types

  dataTable.addColumn(Charts.ColumnType.STRING, data[0][0]);

  for(var i=1; i<data[0].length-1; i++){

    dataTable.addColumn(Charts.ColumnType.NUMBER, data[0][i]);

  }

  

  //Add rows

  for(var j=1; j<data.length; j++){

    dataTable.addRow(data[j]);

    Logger.log(data[j])

  }

  

  //Create and build chart

  var chart = Charts.newLineChart()

      .setDataTable(dataTable)

      .setTitle("Sales by store")

      .build();

  

  var app = UiApp.createApplication().setTitle("AST Chart");

  app.add(chart)

  return app;

}