define vba for only one workbook

Hi (BIG NEWBIE!!)

Wrote a code as per below, but it runs in all active workbooks.

How can I define the code that it only runs for a specific workbook?

Thank You

Sub AutoUpdate()
dTime = Now + TimeValue("00:01:00")
Application.OnTime dTime, "AutoUpdate"
Run "LiveRefresh"
End Sub

Private Function GetValue(path, file, sheet, ref)
path = "H:\ATM_Solutions\Cashing\Gary\Lesley\test"
file = "CIT Dashboard - CIT Unavailable Incidents.xlsx"
sheet = "Page1_1"
ref = "$A$:$n$"
End Function

Sub LiveRefresh()
'
' LiveRefresh Macro
'

'
    ActiveWorkbook.RefreshAll
End Sub