min/max operations in tree views

[Numérigraphe]

Wishlist: have a new attribute in tree views to get the max/min values displayed on the bottom of the view.
Example:
                    <field name="amount_untaxed" min="Smallest amount" min="Biggest Amount" />

[Numérigraphe (numerigraphe)]

Please note that this take all the records in the domain, and not take the limit into account (80 rows only by default on the GTK client).