title: pass array in Helm values property
body: <p>I would like to pass array as property in yaml (values file) in Helm. What I tried:</p>
  
  <ol>
  <li><p>Attempt.</p>
  
  <pre><code>elasticsearch:
    uri: "[\"127.0.0.1:9200\",\"127.0.0.2:9200\"]"
  </code></pre>
  
  <p>Error:</p>
  
  <blockquote>
    <p>ReadString: expects " or n, but found [, error found in #10 byte of
    ...|RCH_URL":["127.0.0.1|..., bigger context
    ...|{"apiVersion":"v1","data":{"ELASTIC_SEARCH_URL": ["127.0.0.1:9200","127.0.0.2:9200"],"LOGS_ENV_PREFI|...</p>
  </blockquote></li>
  <li><p>Attempt. According to <a href="https://github.com/helm/helm/issues/1987" rel="noreferrer">official helm site</a> how to pass array</p>
  
  <pre><code>elasticsearch:
    --set uri={127.0.0.1:9200,127.0.0.2:9200}
  </code></pre>
  
  <p>With error:</p>
  
  <blockquote>
    <p>error converting YAML to JSON: yaml: line 15: mapping values are not
    allowed in this context</p>
  </blockquote></li>
  <li><p>Attempt.</p>
  
  <pre><code> elasticsearch:
     uri: 
     - 127.0.0.1:9200
     - 127.0.0.2:9200
  </code></pre>
  
  <p>Failed with the same exception as 1.</p></li>
  </ol>
  
  <p>EDIT:
  Actually in my case the helm values were not used in YAML file then, so I needed another format and finally solution was to pass uri as string with single quote: </p>
  
  <pre><code> elasticsearch:
     uri: '["127.0.0.1:9200","127.0.0.2:9200"]'
  </code></pre>
  
  <p>Nevertheless @Marcin answer was correct.</p>