Ese script solo crea un comando para obtener un skin si estas en determinada gang, no impide que otros script te den el skin.
P.D: En addCommandHandler pusiste mal el nombre de la funcion.
Write /debugscript 3 in the chatbox and restart your script.
In the bottom of your screen, a small window will appear, it should display errors, if there are any.
That doesn't make any sense.
It'll just spam the chat box with all the vehicle names, also, the loop is wrong, that sort of table can't be looped with "ipairs".