I want to disable values defaul about my form i tried with that, but doesn't work
product = fields.Char(string='Producto', required=True)
cbm =fields.Float(string="CBM", required=True, default=False)
kg = fields.Float(string="Kg", required=True, default=False)
puerto_origen = fields.Char(string="Puerto de Origen", required=True)
fob = fields.Float(string="FOB", required=True, default=False)