title: How to write into many2many field and display in UI?
body: <pre><code>merged_beneficiary_ids = fields.Many2many(
          'openg2p.beneficiary',
          'merged_beneficiary_rel',
          'retained_id',
          'merged_id',
          string=&quot;Merged Duplicates&quot;,
          index=True,
          context={'active_test': False},
          help=&quot;Duplicate records that have been merged with this.&quot;
               &quot; Primary function is to allow to reference of merged records &quot;
      )
  </code></pre>
  <p>I want to write into this many2many field and show some specific fields(maybe firstname or lastname) of merged_id in the odoo UI.The data i have is the beneficiary record,id which will be retained and merged id.</p>