The problem is probably this line:
Range = Excel.Range('A1');
Your Excel object is an Application object, which doesn't have a Range property. The VBA example you follow uses a (IMHO) poor practice of using the global default objects that are only available within the context of the application itself. You need to grab a reference to the Workbook returned by this call:
Excel.Workbooks.Open('test.xls');
After that, you need to get the worksheet from it's indexed Worksheets property, then get the Range from that. Also, "xlEdgeRight" is an enumeration member so external calls have to use the integer values for them instead of a string. You can replace xlEdgeRight with 10.
I know next to nothing about Matlab, but this is what the more explicit code would look like in VBA:
Dim book As Workbook, sheet As Worksheet, rng As Range
Set book = Application.Workbooks.Open("test.xls")
Set sheet = book.Worksheets("Sheet1")
Set rng = sheet.Range("A1")
rng.Font.Italic = True
rng.Borders.Item(10).LineStyle = 1
You should be able to get it from there.
