title: Specify multiple scopes in PayPal RequestPermission API
body: <p>Looking at the <a href="https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&amp;content_ID=developer/e_howto_api_PermissionsRequestPermissionsAPI">RequestPermissions API</a>, it says that the scope is supposed to be a string.  However, I have been unsuccessful in finding out how to specify more than one scope (specifically EXPRESS_CHECKOUT and REFUND).  Comma-separated, semi-colon, and even using their NVP list syntax didn't work.  A CURL sample would be greatly appreciated.</p>
  
  <p>Comma-separated example...</p>
  
  <pre><code>curl -s --insecure -H 
  "X-PAYPAL-SECURITY-USERID: API_USERNAME" 
  -H "X-PAYPAL-SECURITY-PASSWORD: API_PASSWORD" 
  -H "X-PAYPAL-SECURITY-SIGNATURE: API_SIGNATURE" 
  -H "X-PAYPAL-REQUEST-DATA-FORMAT: NV" 
  -H "X-PAYPAL-RESPONSE-DATA-FORMAT: NV" 
  -H "X-PAYPAL-APPLICATION-ID: APP-80W284485P519543T" 
  https://svcs.sandbox.paypal.com/Permissions/RequestPermissions -d 
  "requestEnvelope.errorLanguage=en_US&amp;scope=EXPRESS_CHECKOUT,REFUND&amp;callback=http://my/callback"
  </code></pre>
  
  <p>When I make that request, I get back "Invalid request parameter scope with value EXPRESS_CHECKOUT,REFUND"</p>