# Adding conditional tags or fields
**URL:** https://discuss.elastic.co/t/adding-conditional-tags-or-fields/253890
**Category:** Beats
**Tags:** filebeat
**Created:** [October 31, 2020, 7:34am UTC](https://discuss.elastic.co/t/adding-conditional-tags-or-fields/253890 "2020-10-31T07:34:07Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@zoulja](https://discuss.elastic.co/u/zoulja)
#### Post date: [October 31, 2020, 7:34am UTC](https://discuss.elastic.co/t/adding-conditional-tags-or-fields/253890/1 "2020-10-31T07:34:07Z")
Hello.
I need Filebeat 7.9.2 to add tags based on content.
What I've tried:
```auto
- add_tags:
when:
contains:
request:"/image/"
tags: [image]
- add_tags:
when:
contains:
request:"/api/"
tags: [api]
```
Not sure whether it works or not, Filebeat fails to start
> Exiting: Failed to start crawler: starting input failed: Error while initializing input: wrong type, expect map accessing 'filebeat.inputs.1.processors.2.add\_tags.when.contains'
Please advise what's the issue here and how conditional tagging can be implemented in proper way
---
### Author:  [@jsoriano](https://discuss.elastic.co/u/jsoriano)
#### Post date: [November 3, 2020, 6:24pm UTC](https://discuss.elastic.co/t/adding-conditional-tags-or-fields/253890/2 "2020-11-03T18:24:04Z")
Hey @zoulja,
Configuration looks fine, but the error seems to indicate that there is some typo. Try to add a space between the value and the key of `request`:
```auto
- add_tags:
when:
contains:
request: "/image/"
tags: [image]
- add_tags:
when:
contains:
request: "/api/"
tags: [api]
```
Please also review the indentation, try to avoid the use of tabs.
If nothing works, share the whole configuration file to see if there is something weird.
---
### Author:  [@zoulja](https://discuss.elastic.co/u/zoulja)
#### Post date: [November 4, 2020, 9:25am UTC](https://discuss.elastic.co/t/adding-conditional-tags-or-fields/253890/3 "2020-11-04T09:25:45Z")
Thanks, it really was space issue
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 2, 2020, 11:25am UTC](https://discuss.elastic.co/t/adding-conditional-tags-or-fields/253890/4 "2020-12-02T11:25:55Z")
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