VBA Vlookup For Multiple Matching result output

Function MultipleLookupNoRept(Lookupvalue As String, LookupRange As Range, ColumnNumber As Integer)
Dim i As Long
Dim Result As String
For i = 1 To LookupRange.Columns(1).Cells.Count
  If LookupRange.Cells(i, 1) = Lookupvalue Then
    For J = 1 To i - 1
    If LookupRange.Cells(J, 1) = Lookupvalue Then
      If LookupRange.Cells(J, ColumnNumber) = LookupRange.Cells(i, ColumnNumber) Then
        GoTo Skip
      End If
    End If
    Next J
    Result = Result & " " & LookupRange.Cells(i, ColumnNumber) & ","
Skip:
  End If
Next i
MultipleLookupNoRept = Left(Result, Len(Result) - 1)
End Function