How to automatically populate the next available invoice #

[Guest]

I have a invoice in excel and I want a certain cell to automatically enter
the next invoice availalbe. How can I make that happen? How will it know
what was the last invoice. I once had a PO template that was in excel and it
automatically populated the next available PO #?

Amy help will be appreciated.

Thanks,
Laurie

 

[stacrafty]

We need more info, i assume u just want the next number in the
sequence, therefor it has to know what the last numer was, which I
assume comes of the last invioce, so u have to somehow make the current
invoice pick up this information..

Just explain your question a bit better...