give a different name when adding a new workbook

Hi

I have a macro which copies cells, adds a new workbook, and pastes into it.

But when it adds a workbook, it is named iex "Book1". If I have been working in excel it may happen that the book added is called "Book 2, 3, 4 and so on. Which makes it difficult to referr to the book. Is it possible to set the name given as prefix? for example Temporary. Without having the whole save as scenario etc..