I have a field in a module:

    payment_amount_overdue = fields.Float(
        compute='_get_amounts_and_date',
        string="Amount Overdue",
        store = False,
    )

This field is not stored, so it's not searchable.

How can I make a related field to this field , to store the values in the database?

I tried with this, but this is not working:

payment_amount_due_store = fields.Float(related='partner_id.payment_amount_overdue', string="TEST", store=True)

Thank you for your help.