When you buy or "earn" a key, you paste it into that line.
Execute the actual (usually encrypted) script from a URL. The "Cat and Mouse" Game
Here is the "long story" of how this line of code works and why it exists. What is getgenv() ?
By running that line first, you are saving your key into the executor's global memory.
In the world of Luau (the version of Lua used by Roblox), getgenv() stands for .
The snippet getgenv().Key = "putkeyhere"; is a standard line of code used in , specifically within the community that uses third-party executors (software used to run custom scripts).