# Will variables in ruby filter break with multiple workers?

**URL:** <https://discuss.elastic.co/t/will-variables-in-ruby-filter-break-with-multiple-workers/225285>\
**Category:** Logstash\
**Created:** [March 26, 2020, 8:26pm UTC](https://discuss.elastic.co/t/will-variables-in-ruby-filter-break-with-multiple-workers/225285 "2020-03-26T20:26:53Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [March 26, 2020, 8:42pm UTC](https://discuss.elastic.co/t/will-variables-in-ruby-filter-break-with-multiple-workers/225285/2 "2020-03-26T20:42:06Z")

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> [@seanziee](#):
>
> will the field `b` ever get switched by accident by logstash?

No, not if you use a locally scoped variable name like 'a'. More details [here](https://discuss.elastic.co/t/multiple-pipelines-running-on-same-machine/225217/2).

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_[View the full topic](https://discuss.elastic.co/t/will-variables-in-ruby-filter-break-with-multiple-workers/225285)._