title: How to update a values of specific fields on csv using nifi?
body: <p>I have a CSV file where it contains id, name, and salary as fields. The data in my CSV file is like below.</p>
  
  <pre><code>id,name,salary
  1,Jhon,2345
  2,Alex,3456
  </code></pre>
  
  <p>I want to update the current CSV with new id (id*4)</p>
  
  <pre><code>id,name,salary
  4,Jhon,2345
  8,Alex,3456
  </code></pre>
  
  <p>The format of the file in the destination should aslo be CSV. Can anyone tell me the flow? (What processors do I need). I'm very new to nifi. A big thanks in advance. </p>