title: Subscriptions Integration with PayPal-PHP-SDK
body: <p>I am using <a href="https://github.com/paypal/PayPal-PHP-SDK" rel="nofollow noreferrer">PayPal-PHP-SDK</a> to access PayPal API.</p>
  
  <p>I need a "Quantity (user or seat) pricing plan", and I'm following this guide:
  <a href="https://developer.paypal.com/docs/subscriptions/integrate/" rel="nofollow noreferrer">https://developer.paypal.com/docs/subscriptions/integrate/</a>.
  The steps in the guide include those API endpoints:</p>
  
  <pre><code>/v1/catalogs/products
  /v1/billing/plans
  /v1/billing/subscriptions
  </code></pre>
  
  <p>I have found only how to create a plan(<code>/v1/billing/plans</code>) with the SDK, but I don't know how to add the parameter: <code>"quantity_supported": true</code></p>
  
  <p>I haven't found any examples/samples for <code>/v1/catalogs/products</code>,   <code>/v1/billing/subscriptions</code></p>
  
  <p>Can it be done with the current PayPal-PHP-SDK ?</p>