# Overview

Matches patterns using Regular Expressions to extract or replace text

## Description

This function replaces part of the field value corresponding to the regular expression with a predefined value. You can use this function, for example, to automatically replace abbreviated words. The function replaces the field value with a new one, so you can't restore the original field value after the event is processed.

## Examples

We can replace all spaces contained in a certain field with the ';' sign. To do this, in the function parameters, set Field Name = 'description', Expression = '\s', Replace Value =';'