setAttributedStringValue is not working with ".link" attribute

[vimal-bhadra]

let documentPath:String = Bundle.main.path(forResource: "demo1", ofType: "xlsx")!
let spreadsheet: BRAOfficeDocumentPackage = BRAOfficeDocumentPackage.open(documentPath)
let fooWorkSheet: BRAWorksheet = spreadsheet.workbook.worksheets[0] as! BRAWorksheet

It is working fine with below :
let title = NSMutableAttributedString(string: "title", attributes: [
.font: FONT_BOLD(30),
.foregroundColor: UIColor.red
])
fooWorkSheet.cell(forCellReference: "Title", shouldCreate: true)?.setAttributedStringValue(title)

But It is not working with below :
let title = NSMutableAttributedString(string: "title", attributes: [
.link: "http://www.google.com"
])
fooWorkSheet.cell(forCellReference: "Title", shouldCreate: true)?.setAttributedStringValue(title)

Can you please help me ?