# Rasa regex

**URL:** <https://forum.rasa.com/t/rasa-regex/51474>\
**Category:** Rasa Open Source\
**Created:** [February 21, 2022, 9:51am UTC](https://forum.rasa.com/t/rasa-regex/51474 "2022-02-21T09:51:53Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![naveenjr](https://avatars.discourse-cdn.com/v4/letter/n/76d3ee/32.png) [@naveenjr](https://forum.rasa.com/u/naveenjr)\
**Post date:** [February 21, 2022, 9:51am UTC](https://forum.rasa.com/t/rasa-regex/51474/1 "2022-02-21T09:51:54Z")

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Hi, i was wondering is there any way we can map regex alone for some Entity recoganization in my training data ?

for example i know one entity A is only 5 or 6 digit number but i dont know entity B’s regex or which can’t be easily converted into regex ?

is there any priority while using NER ? like diet classifier\> synonyms\> regex ?

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