Adding a comment to a cell

gridView.exportGrid({ 
  type: "excel", 
  target: "local", 
  fileName: "gridExportSample.xlsx", 
  exportMemo: { 
    author: "Woori Tech International", 
    callback: (grid, itemIndex, dataRow, column, cellMemo) => { 
      if (column === "Month" && grid.getValue(itemIndex, column) < 30) { 
        cellMemo.message = "Less than 10 times."; 
        return cellMemo 
      } 
 
      if (column === "Age" && grid.getValue(itemIndex, column) > 65) { 
        cellMemo.message = "You are over 65 years old." 
        return cellMemo 
      } 
    } 
  }, 
  done: function () { 
    alert("done excel export") 
  }
});