I added a field for Odoo’s sales module and managed it using the compute and inverse function. When it receives an amount, I want it to convert it into a discount percentage and display it in the discount field, but it doesn’t work and when I fill the field, it doesn’t complete the discount field. Can anyone guide me?

class discount_amount_model(models.Model):
    _inherit = 'sale.order.line'

    discount_amount = fields.Float(compute='_compute_discount_amount', inverse='_inverse_discount_amount', string='discount_amount' , readonly=False)

    @api.depends('discount_amount','price_unit')
    def _compute_discount_amount(self):
        for rec in self:
            if rec.discount_amount > rec.price_unit :
                return 0
            
            elif rec.price_unit * rec.product_uom_qty != 0 :
                rec.discount_amount = (rec.discount_amount / (rec.price_unit * rec.product_uom_qty)) * 100 
    
    def _inverse_discount_amount(self): 
        if self.discount_amount:
            self.discount_amount = ((self.price_unit * self.product_uom_qty ) * self.discount) / 100