title: Replace dot & comma with blank in logstash filter
body: <p>I want to replace every dot and comma with a blank in logstash but its not working. </p>
  
  <p>The code below is not giving any errors, but it does not replace the dots and commas:</p>
  
  <pre><code>gsub =&gt; ["new_padd", "[.,]", "", 
          "new_ladd", "[.,]", ""]
  </code></pre>