sheet.getCell(1,1, GC.Spread.Sheets.SheetArea.viewport).locked(false);
sheet.setValue(1,1,"unLocked");
sheet.getRange(-1,3, -1, 1, GC.Spread.Sheets.SheetArea.viewport).locked(false);
sheet.getRange(5, -1, 1, -1, GC.Spread.Sheets.SheetArea.viewport).locked(false);
sheet.options.isProtected = true;