---
title: "REGEX"
url: "https://help.formsfly.com/en/article/regex"
language: "en"
last_updated: "2023-10-23T11:29:16.338Z"
---

# REGEX

Regularly used  expressions

* * *

### Syntax

`REGEX**(**expression**)**`

### Example

```plaintext
regex(., '[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}')
```

### Notes

This example checks for a valid email address