Ticket Tasks - old value and new value

In the table glpi_logs, when a ticket is created, the fields in the table are filled. When a ticket is updated at the fields "title" or "description", in the table was wrote the text of old value and new value in the respective fields.

It would be wonderful if this same idea can be used for tasks, because when we update a task in the ticket, in the table it's don't saved the old value , only the ID of the task.