title: Trying to update intent parameter using custom events in Dialogflow V2 API and its not passing through to the intent
body: <p>In our Dialogflow agent, We have an intent set up with an event called "updateParams" associated with the intent. The intent has a parameter called "ExampleEntity" that I would like to update using c# by invoking the event using the Detect Intent API.  We are using this version of the sdk <strong><em>Google.Cloud.Dialogflow.V2" Version="1.0.0-beta02"</em></strong></p>
  
  <pre><code>            queryInput.Event = new EventInput
              {
                  Name = "updateParams",
  
                  Parameters = new Struct
                  {                        
                      Fields = {{ "ExampleEntity",Value.ForString("Bla")}} 
                  },
                  LanguageCode = languageCode
              };
  </code></pre>
  
  <p>An example of the response can be seen here. As you can see the "ExampleEntity" parameter isn't being updated as per the request: 
  <a href="https://i.stack.imgur.com/NhHbD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NhHbD.png" alt="enter image description here"></a></p>
  
  <p>Any tips on where we're going wrong? We're fairly new to Dialogflow so it is probably something simple.</p>