increment number automatically

[bourah...@gmail.com]

 hello is there a way to increment number automatically from the last record number 

merci

[Drazen D. Babic]

Hi, on_after_append is a Client JS, what happens when someone else updates the record?
I think the Server Side code is needed (check DEmo  Journals/Invoices ) :

def on_apply(item, delta, params, connection):

.

.

[Drazen D. Babic]

User tried this, but failing:

def on_apply(item, delta, params, connection):

    if item.field_by_name('reference'):
       for d in delta:
            d.last()
            d.edit()
            d.reference.value = reference.value +1
            d.post()

The suggested way is d.reference.value +1