# Painless: Collection.contains() not working

**URL:** <https://discuss.elastic.co/t/painless-collection-contains-not-working/178944>\
**Category:** Elasticsearch\
**Created:** [April 29, 2019, 1:38pm UTC](https://discuss.elastic.co/t/painless-collection-contains-not-working/178944 "2019-04-29T13:38:01Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![abdon](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/abdon/32/9195_2.png) [@abdon](https://discuss.elastic.co/u/abdon)\
**Post date:** [April 29, 2019, 3:27pm UTC](https://discuss.elastic.co/t/painless-collection-contains-not-working/178944/2 "2019-04-29T15:27:38Z")

</div>

Because Elasticsearch treats those numbers as Longs by default, you need to make sure that you pass a Long to the `contains` method. The following should work:

```auto
GET testdatatype_unit_tests/_search
{
  "size": 100,
  "query": {
    "script": {
      "script": {
        "source": "doc['IntCollection'].values.contains(1L)",
        "lang": "painless"
      }
    }
  }
}

```

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_[View the full topic](https://discuss.elastic.co/t/painless-collection-contains-not-working/178944)._