--- title: "Develop custom parameter value class" slug: "develop-custom-parameter-value-class" tags: ["Task topic"] updated: 2026-03-20T08:47:39Z published: 2026-03-20T17:44:40Z canonical: "docs.staedean.com/develop-custom-parameter-value-class" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.staedean.com/llms.txt > Use this file to discover all available pages before exploring further. # Develop custom parameter value class To define a web service parameter value, you can use a custom class to return a parameter value. You can use a custom parameter value class to return web service parameters for validation rules and action rules of type **Web service**. The custom parameter value class must extend the **DQSWebServiceParametersBase** base class. This custom class must have at least one return method that returns a value. ## Related - [Set up web service configuration](/set-up-web-service-configuration-enrichment.md)