Adding a Cell Reference to a file name using VBA : I am trying to save a file using VBA but the file name needs to reference a cell within the Workbook. Below is my code, can anyone tell me what I am doing wrong please?

    ActiveWorkbook.SaveAs fileName:= _
    "C:\Desktop\CashBook_\" & Range("E3") & ".txt", FileFormat:=xlCSV, _
    CreateBackup:=False

Kind Regards,
John