title: Update document in cosmos DB with logic app
body: <p>Im trying to add new objects in my CosmosDB Item using LogicApp.</p>
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>{
    "id": "1000",
    "phone": "55512341212"
  }</code></pre>
  </div>
  </div>
  </p>
  <p>to</p>
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>{
    "id": "1000",
    "phone": "55512341212"',
    "name":"David"
  }</code></pre>
  </div>
  </div>
  
  I works if I use &quot;Create or Update a Document&quot; but I have to know the existing content and overwrite. How to just add &quot;name&quot;:&quot;David&quot; without knowing the content ?
  Thanks!
  David</p>