[[MM]RoXoR[FS]]

Make a global variable

pawn Код:

new neon[MAX_PLAYERS][MAX_VEHICLES];//To store object id
new bool:HasNeaon[MAX_PLAYERS][MAX_VEHICLES]; // To check if he have neon

Now, when player typr /neon check if he has neon.
If he dont

pawn Код:

neon[playerid][vehicleid] = CreateObject..
//and attach

If they already have it,

pawn Код:

DestroyObject(neon[playerid][vehicleid]

Just an example.