Hi Supreeth,

Ideally the attrs will be evaluated like [('integer','=','string')] so this will not work.

better create a related field  for the many2one and use the newly created field in the attrs

ex:

many2onefield_name = fields.Char(related="many2onefield.name", string="Name")

<field name="grade" attrs="{'invisible':[('many2onefield_name,'=',value]}"/>

I have perfect example atts for M2O field. can you see please below Answer

<field name="field_name" atts={'operation':domain}>

operation:

Like:

invisible

readonly

Domain:

[(field_name,'operator',Value)]

example:

<field name="name" attrs={'readonly':[('name','=','murugan')]}/>

Hello,

A new related field is the only way also for the latest version 14.0.

No need to set the Store=True, it won't store in the database and you could utilize it in the attrs invisible.

<field name="grade" attrs="{'invisible':[('new_related_field,'=',value]}"/>

Otherwise in demo data this is possible,    
    

<field name="department_id" model="hr.department" eval="obj().env.ref('hr.employee_admin').department_id.id"/>