state = fields.Selection([
('draft','Draft'),
('confirm','Confirmed'),
('process','Processing'),
('paid','Paid'),
('failed','Failed'),
('success','Success'),
('cancel','Cancelled')], string='Status', default='draft')
bill_by = fields.Selection([('individual','Individual'),('company','Company')], default="individual", string='Bill by')
<field name="batch_no" attrs="{'readonly': [('state', 'not in', ('paid')), ('bill_by', '!=', 'company')]}"/>
so i want to make batch_no is not readonly when state = paid and when bill by = company and state = confirm
is that possible ?