Excel VBA Open file

想请问一下，如果想用VBA系EXCEL到弹OPEN FILE 个BOX，俾人自己拣FILE黎OPEN，咁句VBA COMMAND 应该点写。

谢谢。

Sub files()
Dim f As FileDialog

Set f = Application.FileDialog(msoFileDialogOpen)
f.AllowMultiSelect = True
f.Show

MsgBox "file choosen = " & f.SelectedItems.Count & " name: " _
& f.SelectedItems.Item(1)
End Sub

Thx, let me try