# Grok filter if condition issue

**URL:** <https://discuss.elastic.co/t/grok-filter-if-condition-issue/28619>\
**Category:** Logstash\
**Created:** [September 3, 2015, 2:33pm UTC](https://discuss.elastic.co/t/grok-filter-if-condition-issue/28619 "2015-09-03T14:33:54Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [September 3, 2015, 6:04pm UTC](https://discuss.elastic.co/t/grok-filter-if-condition-issue/28619/2 "2015-09-03T18:04:26Z")

</div>

This isn't a grok question, it's a general filter question. This is probably what you're looking for:

```
filter {
  ...
  if "method" in [tags] {
    mutate {
      add_tag => ["newtag", "manualtag"]
    }
  }
}
```

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_[View the full topic](https://discuss.elastic.co/t/grok-filter-if-condition-issue/28619)._