title: URL and Sample Payload to update NIFI Parameter
body: <p>I am using NiFi parameters and I want to update the value of the NIFI parameter on the fly using NIFI REST API.</p>
  <p>But, I could not Identify the URL and the payload format that I have to use in order to update the Parameter.</p>
  <p>Lets Assume that I am storing the auth token in the parameter named &quot;MY_TOKEN&quot;, what is the API URL that i should use to update the value of this parameter and what is the payload that I have to use to update the parameter?</p>