# Watcher that counts the documents that arrive to an index in kibana

**URL:** https://discuss.elastic.co/t/watcher-that-counts-the-documents-that-arrive-to-an-index-in-kibana/270609
**Category:** Elasticsearch
**Tags:** elastic-stack-alerting
**Created:** [April 19, 2021, 4:45pm UTC](https://discuss.elastic.co/t/watcher-that-counts-the-documents-that-arrive-to-an-index-in-kibana/270609 "2021-04-19T16:45:55Z")
**Posts on this page:** 1
**Showing post:** 45

<div class="post-metadata">

### Author: ![stephenb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stephenb/32/40856_2.png) [@stephenb](https://discuss.elastic.co/u/stephenb)
#### Post date: [April 24, 2021, 1:40am UTC](https://discuss.elastic.co/t/watcher-that-counts-the-documents-that-arrive-to-an-index-in-kibana/270609/45 "2021-04-24T01:40:42Z")

</div>

@Juan_David_Jaramillo

And here you go 🙂

The Trick or (_Magic Incantation_) is that since the transform creates a _new_ payload that overwrites the existing one, you need to save into the new payload the fields you want to use from the old payload ... and then reference them directly.

Note since I renamed / copied in the `heartbeat_count.value` into the new payload it is now at the top level of the new `ctx.payload` object

```
  "actions": {
    "notify-slack": {
      "slack": {
        "message": {
          "to": [
            "#stephenb-es-integration"
          ],
          "text": "{{ctx.metadata.name}} executed at {{ctx.payload.local_execution_time}} : Encountered {{ctx.payload.heartbeat_count}} heartbeats in the last 1 day"
        }
      }
    }
  },
  "transform": {
    "script": {
      "source": """
        return [
        'local_execution_time' : ctx.trigger.triggered_time.withZoneSameInstant(ZoneId.of('America/Bogota')).format(DateTimeFormatter.ofPattern('YYYY-MM-dd HH:mm:ss')),
        'heartbeat_count' : ctx.payload.aggregations.heartbeat_count.value
          ]
      """,
      "lang": "painless"
    }
  }
}

```

And the results ...

> test-heartbeat-watcher executed at 2021-04-23 20:44:46 : Encountered 60480 heartbeats in the last 1 day
> 
> test-heartbeat-watcher executed at 2021-04-23 20:45:01 : Encountered 60480 heartbeats in the last 1 day

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