title: "Invalid expression: Any/All may only be used following a collection.\r\nParameter name: $filter"
body: <p>I'm using Azure Cognitive Search Service for my application. First, we have to create a data source, indexer and index in order to create a search service.</p>
  
  <p>Assume that we have the following simple JSON that is indexed in azure search.</p>
  
  <pre><code>{ 
    "hotelId: 1, 
    "rooms": { 
               "roomId": 1, 
               "type": "deluxe" 
             } 
  }
  </code></pre>
  
  <p>I'm trying to use the OData $filter function to filter my results</p>
  
  <pre><code>$filter=Rooms/any(room: room/Type eq 'deluxe')
  </code></pre>
  
  <p>But azure search throws an error "Invalid expression: Any/All may only be used following a collection.\r\nParameter name: $filter"</p>