# Multiline  pattern for date is not working

**URL:** https://discuss.elastic.co/t/multiline-pattern-for-date-is-not-working/222272
**Category:** Logstash
**Created:** [March 5, 2020, 11:24am UTC](https://discuss.elastic.co/t/multiline-pattern-for-date-is-not-working/222272 "2020-03-05T11:24:08Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![Sudheer\_T](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sudheer_t/32/46287_2.png) [@Sudheer\_T](https://discuss.elastic.co/u/Sudheer_T)
#### Post date: [March 5, 2020, 11:24am UTC](https://discuss.elastic.co/t/multiline-pattern-for-date-is-not-working/222272/1 "2020-03-05T11:24:08Z")

</div>

input  
{  
file {  
path =\> "C:/ELK/logs/\*.log"

```
codec => multiline {
          pattern => "^%{TIMESTAMP_ISO8601}"
          negate => true
          what => "previous"
        } 
}

}
```

---

<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: [April 2, 2020, 11:24am UTC](https://discuss.elastic.co/t/multiline-pattern-for-date-is-not-working/222272/2 "2020-04-02T11:24:09Z")

</div>

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