draggable/ sortable How to increment on the items each new item?

draggable/ sortable How to increment on the items each new item?


Hello,
I draw on the example of site:
# http://jqueryui.com/demos/draggable/ sortable
on the example: draggable + sotable
This allows you to clone a basic item in a list. Each additional copy
of this item basis.
As against the ID remains the same, so every addition we are left with
duplicates of item.
How to increment on the items each new item?
and also how to manipulate the content of the new item to manage the
other containing the ID?
Thank you in advance for your ideas is tracks ...