# Access \_ingest using Painless script

**URL:** <https://discuss.elastic.co/t/access-ingest-using-painless-script/245610>\
**Category:** Elasticsearch\
**Created:** [August 19, 2020, 1:32pm UTC](https://discuss.elastic.co/t/access-ingest-using-painless-script/245610 "2020-08-19T13:32:50Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![BkQc](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bkqc/32/73699_2.png) [@BkQc](https://discuss.elastic.co/u/BkQc)\
**Post date:** [August 19, 2020, 1:32pm UTC](https://discuss.elastic.co/t/access-ingest-using-painless-script/245610/1 "2020-08-19T13:32:51Z")

</div>

I'm trying to populate an array during ingestion within a sub-pipeline.  
To do so, I'm using a painless script like the following that gives this error.  
What am I doing wrong?

Script:

```auto
{
  "script":{
    "source":"ctx.MyArray.Add(ctx._ingest._value)"
  }
}

```

But I always get a null ref on \_ingest

```auto
"error" : {
  "root_cause" : [
    {
      "type" : "script_exception",
      "reason" : "runtime error",
      "script_stack" : [
        "ctx.MyArray.Add(ctx._ingest._value)",
        " ^---- HERE"
      ],
      "script" : "ctx.MyArray.Add(ctx._ingest._value)",
      "lang" : "painless",
      "position" : {
        "offset" : 27,
        "start" : 0,
        "end" : 35
      }
    }
  ],
  "type" : "script_exception",
  "reason" : "runtime error",
  "script_stack" : [
    "ctx.MyArray.Add(ctx._ingest._value)",
    " ^---- HERE"
  ],
  "script" : "ctx.MyArray.Add(ctx._ingest._value)",
  "lang" : "painless",
  "position" : {
    "offset" : 27,
    "start" : 0,
    "end" : 35
  },
  "caused_by" : {
    "type" : "null_pointer_exception",
    "reason" : """Cannot invoke "Object.getClass()" because "callArgs[0]" is null"""
  }
}

```

---

<div class="post-metadata">

**Author:** ![BkQc](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bkqc/32/73699_2.png) [@BkQc](https://discuss.elastic.co/u/BkQc)\
**Post date:** [September 15, 2020, 5:33pm UTC](https://discuss.elastic.co/t/access-ingest-using-painless-script/245610/2 "2020-09-15T17:33:24Z")

</div>

If no one is replying, does it mean it is impossible to access \_ingest in Painless script?

---

<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:** [October 13, 2020, 5:33pm UTC](https://discuss.elastic.co/t/access-ingest-using-painless-script/245610/3 "2020-10-13T17:33:25Z")

</div>

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