@lleclerc Hey Luc, thanks... in SS 2.0 you are able to do that too, no problem... however my Suitelet flow is like this:
1- The user input a Sales Order Number and submit the form.
2- The Suitelet read the needed info and return the Sublist with the Lines.
3- The user could add or delete lines on this sublist and submit the form again...
4- At this point I will like to know what was deleted or added to this sublist.
So I will have to use a Client Script??? hoping for something in the server (suitelet side) without the need of the ClientScript...