# Access heartbeat fields on rule action
**URL:** https://discuss.elastic.co/t/access-heartbeat-fields-on-rule-action/293955
**Category:** Synthetics
**Created:** [January 10, 2022, 11:22pm UTC](https://discuss.elastic.co/t/access-heartbeat-fields-on-rule-action/293955 "2022-01-10T23:22:58Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@mojohoho](https://discuss.elastic.co/u/mojohoho)
#### Post date: [January 10, 2022, 11:22pm UTC](https://discuss.elastic.co/t/access-heartbeat-fields-on-rule-action/293955/1 "2022-01-10T23:22:58Z")
I have a heartbeat monitor with custom fields and `fields_under_root: true`
How can I access these custom fields in a rule action?
For example, I have the below monitor:
```auto
- type: http
id: dummy-nonexistent-url3
name: Dummy nonexistent url3
enabled: true
schedule: '@every 10s'
urls:
- https://www.notrealurl6663.com
ipv4: true
ipv6: true
mode: any
fields:
iAmACustomField: hello
tags: [monitoring, dev]
```
And an uptime rule with below webhook connector body:
```auto
{
"@timestamp": "{{date}}",
"message": "{{state.latestErrorMessage}}",
"alert.id": "{{alert.id}}",
"alert.actionGroupName": "{{alert.actionGroupName}}",
"alert.actionGroup": "{{alert.actionGroup}}",
"state.monitorId": "{{state.monitorId}}",
"state.monitorName": "{{state.monitorName}}",
"rule.id": "{{rule.id}}",
"rule.name": "{{rule.name}}",
"rule.type": "{{rule.type}}",
"rule.tags": "{{rule.tags}}",
"state.isTriggered": "{{state.isTriggered}}",
"state.monitorUrl": "{{state.monitorUrl}}",
"state.monitorType": "{{state.monitorType}}",
"state.currentTriggerStarted": "{{state.currentTriggerStarted}}",
"state.firstCheckedAt": "{{state.firstCheckedAt}}",
"state.lastCheckedAt": "{{state.lastCheckedAt}}",
"state.firstTriggeredAt": "{{state.firstTriggeredAt}}",
"state.lastTriggeredAt": "{{state.lastTriggeredAt}}",
"state.lastResolvedAt": "{{state.lastResolvedAt}}",
"state.observerHostname": "{{state.observerHostname}}",
"state.statusMessage": "{{state.statusMessage}}",
"iamacustomfield": "{{status.fields.iAmACustomField}}"
}
```
The webhook connector is logging these alert events to a data stream index and documents are created with all other specified values except for "iamacustomfield" which comes up empty.
I am using heartbeat v7.16.1
---
### Author:  [@Andrew\_Cholakian1](https://discuss.elastic.co/u/Andrew_Cholakian1)
#### Post date: [January 10, 2022, 11:49pm UTC](https://discuss.elastic.co/t/access-heartbeat-fields-on-rule-action/293955/2 "2022-01-10T23:49:43Z")
Unfortunately we don't support custom fields at the moment for alerting. Would you mind opening a github issue on [kibana](https://github.com/elastic/kibana/issues/new?assignees=&labels=&template=Feature_request.md) if it's a feature you'd like to see? If you could put a link to it here that'd be appreciated!
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 3, 2022, 11:50pm UTC](https://discuss.elastic.co/t/access-heartbeat-fields-on-rule-action/293955/3 "2022-02-03T23:50:11Z")
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