Merging two working scripts into one on FiveM. Streaming custom props to the server

Hello, I have two working scripts on my VRP Framework regarding my garages, but only one of them saves the database of my lscustoms modifications. My goal is to transport the part of the code where it saves the LSCustoms into my current garage system. I also need to learn how to stream custom maps made on singleplayer Map Editor into the FiveM Server. Thanks in advance!