# Can't use example plugin in painless script

**URL:** <https://discuss.elastic.co/t/cant-use-example-plugin-in-painless-script/267705>\
**Category:** Elasticsearch\
**Tags:** painless\
**Created:** [March 18, 2021, 5:19pm UTC](https://discuss.elastic.co/t/cant-use-example-plugin-in-painless-script/267705 "2021-03-18T17:19:16Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![GabrielM](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/gabrielm/32/47827_2.png) [@GabrielM](https://discuss.elastic.co/u/GabrielM)\
**Post date:** [March 18, 2021, 5:19pm UTC](https://discuss.elastic.co/t/cant-use-example-plugin-in-painless-script/267705/1 "2021-03-18T17:19:16Z")

</div>

Hello everyone ! I am using a ES 7.7.0 cluster and I am trying to create a plugin to add some advanced things in my painless scripts.

To do so, I compiled this : [elasticsearch/plugins/examples/painless-whitelist at 6.2 · elastic/elasticsearch · GitHub](https://github.com/elastic/elasticsearch/tree/6.2/plugins/examples/painless-whitelist)

And after installing it I confirm that the plugin is installed :

```auto
curl -sXGET "$ES/_cat/plugins" | grep painless
elasticsearch-data-1-0.elasticsearch painless-whitelist 7.7.0-SNAPSHOT
elasticsearch-data-2-0.elasticsearch painless-whitelist 7.7.0-SNAPSHOT
elasticsearch-data-3-0.elasticsearch painless-whitelist 7.7.0-SNAPSHOT

```

But when I am calling the example script I have this error:

```auto
    curl -H "Content-Type: application/json" -sXPOST \
    "$ES/_ingest/pipeline/_simulate" -d '{
      "pipeline": {
        "description": "x",
        "processors": [
          {
            "script": {
              "source": "def e = new ExampleWhitelistedClass(6, 42);"
            }
          }
        ]
      },
      "docs": [
        {
          "_source": "{}"
        }
      ]
    }'  
    {"error":{"root_cause":[{"type":"script_exception","reason":"compile error","processor_type":"script","script_stack":["def e = new ExampleWhitelistedClass(6 ..."," ^---- HERE"],"script":"def e = new ExampleWhitelistedClass(6, 42);","lang":"painless","position":{"offset":12,"start":0,"end":37}}],"type":"script_exception","reason":"compile error","processor_type":"script","script_stack":["def e = new ExampleWhitelistedClass(6 ..."," ^---- HERE"],"script":"def e = new ExampleWhitelistedClass(6, 42);","lang":"painless","position":{"offset":12,"start":0,"end":37},"caused_by":{"type":"illegal_argument_exception","reason":"invalid sequence of tokens near ['ExampleWhitelistedClass'].","caused_by":{"type":"no_viable_alt_exception","reason":null}}},"status":400}

```

I can't find any solution and if someone has a hint, it would be very cool !

Thank you in advance, have a good day !

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 15, 2021, 5:19pm UTC](https://discuss.elastic.co/t/cant-use-example-plugin-in-painless-script/267705/2 "2021-04-15T17:19:41Z")

</div>

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