I am trying to create a button that will clear and reformat the input data based on criteria ("array") being meet in a column [Test]. I hope the below VB is close:

 Private Sub Workbook_Open()
Dim sR As String
Dim sFile As String
    Sheets("Input").Activate
    Range("A1").Select
    sR = MsgBox("Clear the input sheet for new data?", vbQuestion + vbYesNo + vbDefaultButton2)
    If sR = vbYes Then
        Application.ScreenUpdating = False
        On Error Resume Next
        Application.DisplayAlerts = False
        Sheets("Input").UsedRange.Clear
        ChDrive "N:\2_TQM\aCGH QC Data\Array QC\For Bob"
        ChDir "N:\2_TQM\aCGH QC Data\Array QC\For Bob"
        On Error GoTo 0
        sFile = Application.GetOpenFilename _
            (FileFilter:="Excel Workbooks, *.xlsx", MultiSelect:=False)
        Workbooks.OpenText Filename:=sFile, Origin:=437, StartRow:=1, DataType:=xlDelimited, _
            TextQualifier:=xlDoubleQuote, ConsecutiveDelimiter:=False, Tab:=True, _
            FieldInfo:=Array(Array(1, 1), Array(2, 1), _
            Array(3, 1), Array(4, 1), Array(5, 1), Array(6, 1), Array(7, 1), Array(8, 1), Array(9, 1), _
            Array(10, 1), Array(11, 1), Array(12, 1), Array(13, 1), Array(14, 1), Array(15, 1), Array( _
            16, 1), Array(17, 1), Array(18, 1), Array(19, 1), Array(20, 1), Array(21, 1), Array(22, 1), _
            Array(23, 1), Array(24, 1), Array(25, 1), Array(26, 1), Array(27, 1), Array(28, 1), Array( _
            29, 1), Array(30, 1), Array(31, 1), Array(32, 1), Array(33, 1), Array(34, 1), Array(35, 1), _
            Array(36, 1), Array(37, 1), Array(38, 1), Array(39, 1), Array(40, 1), Array(41, 1), Array( _
            42, 1), Array(43, 1), Array(44, 1), Array(45, 1), Array(46, 1), Array(47, 1), Array(48, 1), _
            Array(49, 1), Array(50, 1), Array(51, 1), Array(52, 1), Array(53, 1), Array(54, 1), Array( _
            55, 1)), TrailingMinusNumbers:=True
        ActiveWorkbook.Sheets(1).UsedRange.Copy
        ThisWorkbook.Sheets("Input").Range("A1").PasteSpecial
        Application.CutCopyMode = False
        ActiveWorkbook.Close False
        Sheets("Input").Activate
        ActiveSheet.Range("A1").Select
        Application.ScreenUpdating = True
    End If
End Sub

' reformat the input
If [Test]=”array”, Then [Lab #], [Name], [Result], [Final]
Thank you .