Create & Save Workbook To Same Path As Macro File

I have code to create a new workbook, and when I try to rename it I get "Compile error: Can't assign to read-only property."

Dim objXlApp As Object
Dim wkb As Workbook
Dim wks As Worksheet
Set objXlApp = CreateObject("Excel.Application")
' Create a workbook
Set wkb = objXlApp.Workbooks.Add
' Delete all worksheets bar the first one.
For Each wks In wkb.Worksheets
If Not wks.Index = 1 Then
wks.Delete

End If
Next wks
'Create some worksheets and names
With wkb
.Worksheets(1).Name = "myWorksheet1"
.Worksheets.Add.Name = "myWorksheet2"
.Worksheets.Add.Name = "myWorksheet3"
.Worksheets.Add.Name = "myWorksheet4"
End With...................................