Extract Parameters

Custom Variable Template for Server-Side Google Tag Manager

Extract a parameter (e.g. fbclid or gclid) value from URLs event data like page_location or a request parameter

Note: This template does not need any permissions.

Usage

Create a variable to extract a request parameter (like dl from a raw Universal Analytics request) or event data field (like page_location) where the desired parameter value can be found.
Create a new variable with this template.
Choose the variable from the first step as input. Then define the name of the desired parameter.
The variable will find and return the parameter value. If the parameter is not present, you can pick either an empty string or undefined as return value.