# Watcher's condition
**URL:** https://discuss.elastic.co/t/watchers-condition/252268
**Category:** Elasticsearch
**Tags:** elastic-stack-monitoring, elastic-stack-alerting
**Created:** [October 15, 2020, 8:30pm UTC](https://discuss.elastic.co/t/watchers-condition/252268 "2020-10-15T20:30:35Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@victor.vera](https://discuss.elastic.co/u/victor.vera)
#### Post date: [October 15, 2020, 8:30pm UTC](https://discuss.elastic.co/t/watchers-condition/252268/1 "2020-10-15T20:30:35Z")
**Hi, I need help in a watcher's condition:**
**I don't know if a for or a while is useful: I need the following: I have a variable "summary.down" with two values 0 and 1, so I need it to be executed infinitely and when it changes, that is, when "summary.down" is equal to 0, I need you to do an action, which is to send me a report to the email I have already configured.**
```auto
{
"trigger": {
"schedule": {
"interval": "1h"
}
},
"input": {
"search": {
"request": {
"search_type": "query_then_fetch",
"indices": [
"agenteallot*"
],
"rest_total_hits_as_int": true,
"body": {
"size": 0,
"query": {
"bool": {
"filter": [
{
"range": {
"@timestamp": {
"gte": "{{ctx.trigger.scheduled_time}}||-5m",
"lte": "{{ctx.trigger.scheduled_time}}",
"format": "strict_date_optional_time||basic_time_no_millis"
}
}
},
{
"term": {
"monitor.name.keyword": "01-1-CAV30328203-DATOS-PPAL-2.7G-99.98"
}
}
]
}
},
"aggs": {
"metricAgg": {
"max": {
"field": "summary.down"
}
}
}
}
}
}
},
"condition": {
"script": {
"source": " while (ctx.payload.aggregations.metricAgg.value != params.threshold ) {return=true; } return=false;",
"lang": "painless",
"params": {
"threshold": 0
}
}
},
"actions": {
"email_1": {
"email": {
"profile": "standard",
"attach_data": {
"format": "json"
},
"to": [
"juan.jaramillo@megadvantage.com",
"juancho.jaramillo16@gmail.com",
"victor.vera@megadvantage.com"
],
"subject": "{{ctx.metadata.name}} 01-1-CAV30328203-DATOS-PPAL-2.7G-99.98",
"body": {
"text": """Buen dia, Adjunto registro del reporte.
⚠️ALERTA NODO!!! El siguiente enlace perdió la conexión.
Estado: Down🔴
Nombre del Enlace: 01-1-CAV30328203-DATOS-PPAL-2.7G-99.98
🕧Hora: {{ctx.execution_time}} {{ctx.result.execution_time}}
Área: Networking
🔔Mensaje Alerta: El enlace ha dejado de responder. Responder correo a telecomunicaciones@udistrital.edu.co
Ingrese aquí para más información: https://72dfe17217744236af40cc31b704a664.us-central1.gcp.cloud.es.io:9243/s/distrital/app/uptime#"""
}
}
}
},
"transform": {
"script": {
"source": "HashMap result = new HashMap(); result.result = ctx.payload.aggregations.metricAgg.value; return result;",
"lang": "painless",
"params": {
"threshold": 0
}
}
}
}
```
---
### Author:  [@spinscale](https://discuss.elastic.co/u/spinscale)
#### Post date: [October 16, 2020, 1:54pm UTC](https://discuss.elastic.co/t/watchers-condition/252268/3 "2020-10-16T13:54:22Z")