Formula Update On Protected Workbooks (With VBA)

[Useful]

Hi,
I try to write the code that formula updates on protected Workbooks with VBA but something is wrong what?

Sub Update()
ActiveWorkbook.UpdateLink Name:= _
        "C:\Documents and Settings\*******.xls", Type:=xlExcelLinks, Password:="5"
End Sub

P.S: but i know that when use command "open and close workbook" it works but i want to update links without opening the protected workbook. (I don't want to open the sourse, simply i want to update links)
Thanks in advance!