I wonder how to retrieve the list of ID when adding drag?

I wonder how to retrieve the list of ID when adding drag?


Hello,
Small issue?
I am based on the example ui.sortable / draggable (http://jqueryui.com/
demos/draggable/ # sortable)
I wonder how to retrieve the list of ID when adding drag?
Because I serializes the result I am back with the ID placed in drive,
but the addition is not incremented, it is an ID base
I think at the time of the clone should happen to give an id to add
the item, but I do not know how the vote ...
So how can you add to that this increment ID to become unique and
apply to these children?
Thank you in advance