---
title: Use Cases
description: "### Migrate your legacy code Customer was using M-Files for over 8 years and his internal development was using different approaches when developing M-Files actions. They have used VAF application and VB scripts. All legacy VAF methods are executed with…"
url: "https://extensionkit.unitfly.com/documentation/extension-methods-use-cases/"
updated: "2025-05-01"
category: Configurations / Extension Methods
---

# Use Cases

### Migrate your legacy code

Customer was using M-Files for over 8 years and his internal development was using different approaches when developing M-Files actions. They have used VAF application and VB scripts. All legacy VAF methods are executed with Extension methods and now have all their processes supported in one place.

### Expand what M-Files and Extension kit can’t

Customer has use-cases and calculations that can’t be solved using Extension Kit. They have developed methods and are executing them in certain events using Extension Methods.