If your app reads EXPERT_LICENSE_KEY as a variable and you want to rename the variable itself:
The license system is designed to be unobtrusive: rename expert license key
Rename Expert is designed to handle massive file organization tasks that standard Windows tools cannot. Without a license key, the demo version restricts the number of files or folders you can rename in a single batch. Entering a legitimate license key provides: If your app reads EXPERT_LICENSE_KEY as a variable
Real-time conflict detection (duplicate names) and a multi-stage undo feature to reverse changes. How to Get and Use Your License Key rename expert license key