Another plugin already exists for this. Also, are you serious about setting visibility in PreThink ? It is enough to do it only one time when the command is executed. And don't use stocks from fakemeta_util, use cstrike/fakemeta/engine/fun modules instead, they are faster. fakemeta_util is good for learning purpose. It's true that some of it's functions may be usefull, but some are just wrappers or bad implementation(because code run in a plugin and not in a module) of already existing natives.