Why i can't access values of one2many field on kanabn view . i need to loop over them to access them but it only return the number of records that's it. I have tried this code but it is'nt working

<kanban>

<field name="one2manyFieldname"/>

<templates>   

<t t-name="kanban-box">     

   <div class="oe_kanban_content">      

      <p>              

         <t t-foreach="record.one2manyFieldname.raw_value" t-as='o'>                

         <t t-esc="o.name"/><field name="name"/><br/>               </t>          

     </p>       

   </div>   

</t>

</templates>

instead of getting values i am getting blank result.Kindly help on this problem.Thank You