How i can get object user in POS kanban view ?

I tried to replace domain of action_pos_config_kanban

when i try replace domain like this, its work fine

<record model="ir.actions.act_window" id="noota_action_pos_config_kanban">
<field name="name">Point of Sale Noota</field>
 <field name="type">ir.actions.act_window</field>
 <field name="res_model">pos.config</field> <field name="view_type">form</field>
 <field name="view_mode">tree,kanban,form</field> <field name="search_view_id" ref="point_of_sale.view_pos_config_search" /> 
<field name="domain">[('id','=', uid)]</field>
    <field name="help" type="html"> 
                <p class="oe_view_nocontent_create"> Click to create a new PoS config.
              </p><p>                Configure at least one Point of Sale to be able to sell through the PoS interface.
              </p> 
    </field> 
       </record>

but when i try change the domain like this

 model="ir.actions.act_window" id="noota_action_pos_config_kanban">
<field name="name">Point of Sale Noota</field>
<field name="type">ir.actions.act_window</field>
<field name="res_model">pos.config</field> <field name="view_type">form</field>
<field name="view_mode">tree,kanban,form</field> <field name="search_view_id" ref="point_of_sale.view_pos_config_search" />
<field name="domain">[('id','in', user.pos_allowed_ids.ids)]</field>
    <field name="help" type="html">
                <p class="oe_view_nocontent_create"> Click to create a new PoS config.
              </p><p> Configure at least one Point of Sale to be able to sell through the PoS interface.
              </p>
    </field>
</record>

Its say errorr

Uncaught Error: NameError: name 'user' is not defined