Namaste, I have tax field which I want to be required for a particular company, I have tried this code in company onchange:

        if company_id == self.env.ref('x.company').id:
            cr, uid, context = self.env.args
            context = dict(context)
            context.update({'filter_comp': True})
            self.env.args = cr, uid, misc.frozendict(context)

and iN XML

attrs="{'readonly':[('state','not in','draft')],
                                'required':[('company_id','=',context.get('filter_comp',False))]}"/>

it says context is not defined. Am I doing something wrong here?

if not, how can i achieve this?