from odoo import api, models, fields class AccountMove(models.Model): _inherit = 'account.move' amount_total_words = fields.Char("Amount total in words", compute="_compute_amount_total_words") @api.depends('amount_total', 'currency_id') def _compute_amount_total_words(self): for record in self: record.amount_total_words = record.currency_id.amount_to_text(record.amount_total)