Excel VBA updating links

I am trying to set up a VBA macro to update link paths in excel. I looked up some code online and tried to put it together, and am getting errors. I am wondering if i could get some direction here. Please note that i am not a programmer by profession, just trying to reduce some manual updating work.

Cheers!

Private Sub CommandButton1_Click()

Dim FolderPath As String
Dim FSO As Object
Dim bookname As String
Dim wbook As Workbook
Dim oldname As String
Dim newname As String


oldname = "C:\Users\XX\Documents\[Broadstreet.xlsx]"

newname = "C:\Users\XX\Documents\[Broadstreet2.xlsx]"

FolderPath = "C:\Users\XX\Documents1"


With Application
    .ScreenUpdating = False
    .AskToUpdateLinks = False

End With


For Each Workbook In FSO.GetFolder(FolderPath).Files
    bookname = Workbook.Name

    MsgBox (bookname)

    Set wb = Workbooks.Open(FolderPath & "\" & bookname)


   ActiveWorkbook.ChangeLink oldname1, newname1, xlLinkTypeExcelLinks


   wb.Close SaveChanges:=True

Next

Application.ScreenUpdating = True

End Sub