function myFunction() { var id="1JVCJ9bRKnZyOc-bKoTFng65kN5nNFvop952NZafXtZk"; ex1 = SpreadsheetApp.openById(id); sheet = ex1.getSheetByName("data"); a=sheet.getRange(1,1).getValue(); a=a+"SSSSSSSS"; sheet.getRange(3,2).setValue(a); }