title: How to add additional info into php array
body: <p>I use this php code:</p>
  
  <pre><code>public function checkout(&amp;$order, &amp;$response)
      {
          $settings = Settings::get($order-&gt;seller_id);
          $readon= 'maksājums'; 
          $readon= $order-&gt;id;
          $order-&gt;custom([
              'payment_details' =&gt; [
                  'bank_name' =&gt; [ 'label' =&gt; $this-&gt;_-&gt;_('Bank Name'), 'value' =&gt; $settings-&gt;bank_name ],
                  'account_owner' =&gt; [ 'label' =&gt; $this-&gt;_-&gt;_('Account Owner'), 'value' =&gt; $settings-&gt;account_owner ],
                  //'bic' =&gt; [ 'label' =&gt; $this-&gt;_-&gt;_('BIC/SWIFT'), 'value' =&gt; $settings-&gt;bic ],
                  'iban' =&gt; ['label' =&gt; $this-&gt;_-&gt;_('IBAN'), 'value' =&gt; $settings-&gt;iban ],
                  'reason' =&gt; [ 'label' =&gt; $this-&gt;_-&gt;_('Reason for Payment'), 'value' =&gt; $readon],
              ],
          ]);
  
          $response = [];
          $response['redirect'] = $this-&gt;meta('manual_url');
  
          return Payment::STATUS_OK;
      }
  </code></pre>
  
  <p>Problem is that I want to add additional text on value readon. Right now $readon show only order number, but I want that it display text like "Please make payment for Order No.$order->id"</p>