title: How to add new custom field to billing address section in magento2
body: <p>I have tried to add new field in magento2 billing address section. I have followed below link to add new field in shipping address block</p>
  
  <p><a href="http://oyenetwork.com/articles/magento2-devliery-date-module-creation-from-scratch/" rel="nofollow">http://oyenetwork.com/articles/magento2-devliery-date-module-creation-from-scratch/</a></p>
  
  <p>I have added new field to shipping address section successfully. But in my site, I have been using "<strong>Virtual products</strong>". So I want to add my new custom field into billing section. I just modified that "<strong>LayoutProcessorPlugin.php</strong>" code like below</p>
  
  <blockquote>
    <p>$jsLayout['components']['checkout']['children']['steps']['children']['billing-step']['children']['payment']['children']['payments-list']['children']['delivery_date']</p>
  </blockquote>
  
  <p>instead of</p>
  
  <blockquote>
    <p>$jsLayout['components']['checkout']['children']['steps']['children']['shipping-step']['children']['shippingAddress']['children']['shipping-address-fieldset']['children']['delivery_date']</p>
  </blockquote>
  
  <p>But it doesn't working. How to add my new custom field to Billing address block in magento2?</p>