The lua script is loaded automatically within the program (or sound or patch, whatever you like to call it) It uses a lua script block with a reference to the script file stored on your disk. So you can modify whatever you like in a sound or the script, and that will become active right away! When properly saved, all sounds that uses the same script, will have the latest script version automatically loaded and ready to go.
I hope this will help you?
LuLu