Thanks for your fast reply paul !
[strike]In fact, my first idea was to add the key of my object alert with:
Google is using objects as storage key, it means I can't directly send the key of my object but i didnt' thought about sending the position of my object from the list.
I think I will try to send my request with a dopost method to the same servlet so I won't have to retrieve my list from the datastore again.[/strike]
SorryI'm just starting learning
JEE, I know I should'nt put java in my jsp but don't know how to avoid if for the moment.
=> Trying #1