title: Can we change parameters value at runtime
body: <p>Suppose, we have a var type and we want to hard code some values just for testing purpose something in this:</p>
  
  <pre><code>var payload = JsonConvert.SerializeObject(sof);
  </code></pre>
  
  <p>Here, i want to change some properties values in payload variable at runtime.On Hover,i can see all properties with values.I want to know can i change one or two of them 
  and post those changed values alongwith original values to this:</p>
  
  <p>await client.PostAsync(url, new StringContent(payload, Encoding.UTF8, "application/json"));</p>
  
  <p>Please someone tell me how to do it.</p>