Sub Macro1()
Dim oRng As Range
Dim strText As String
Dim i As Long
    Set oRng = ActiveDocument.Range
    i = 1
    With oRng.Find
        Do While .Execute(FindText:="\[\[(*)\]\]", _
                          MatchWildcards:=True)
            strText = Replace(oRng.Text, "[", "")
            strText = Replace(strText, "]", "")
            ActiveDocument.Footnotes.Add oRng, CStr(i), strText
            oRng.Text = ""
            i = i + 1
            oRng.Collapse 0
        Loop
    End With
lbl_Exit:
    Set oRng = Nothing
    Exit Sub
End Sub