Copy data from another worksheet without open that workbook

Hi
I have this VBA that work for me, but I want to update my sheet without opening the other file. any idea how i can do this?
thanks in advance.

Option Explicit
Sub test()
    Dim wb As Workbook, wb2 As Workbook
    Dim ws As Worksheet
    Dim vFile As Variant

    'Set source workbook
    Set wb = ActiveWorkbook
    'Open the target workbook
    vFile = Application.GetOpenFilename("Excel-files,*.xls", _
        1, "Select One File To Open", , False)
    'if the user didn't select a file, exit sub
    If TypeName(vFile) = "Boolean" Then Exit Sub
    Workbooks.Open vFile
    'Set targetworkbook
    Set wb2 = ActiveWorkbook

    'For instance, copy data from a range in the first workbook to another range in the other workbook
    wb.Worksheets("Sheet1").Range("b5:g42").Value = wb2.Worksheets("POMaster").Range("b5:g42").Value
End Sub