I want to use these code to create a channel and post a message whenever the state of a record changes. However, the xml creates a channel and automatically adds my members to it, but the content I post from the python code isn't seen anywhere. How can I post a message to this channel?

Or even just a DM to the users, I just don't know how to use message system in odoo.

# discuss.channel.xml -->
        
	​progress        
	​notification about ongoing project        
	​

# # python code to post message

odoobot_id = self.env.ref('base.partner_root').id

channel = self.env['discuss.channel'].search([('name', 'ilike', 'progress')])
channel.sudo().message_post(            body=message,            author_id=odoobot_id,            message_type="comment",            subtype_xmlid="mail.mt_comment",        )