[X337]

Change :

Код:

new spawnedcar = CreateVehicle(FirstCar, 488.0754, -420.3091, 2757.9961, 358.6074, 1, 1, -1, 0);

To

Код:

new spawnedcar = CreateVehicle(strval(FirstCar), 488.0754, -420.3091, 2757.9961, 358.6074, 1, 1, -1, 0);

Take a look at this : https://sampwiki.blast.hk/wiki/CreateVehicle
The first argument on CreateVehicle must be an integer