[Konstantinos]

Because you set it for the first index (0):

pawn Код:

SetVehiclePos(veh, derbyspawns3[0][0], derbyspawns3[0][1],derbyspawns3[0][2]);

It should be:

pawn Код:

SetVehiclePos(veh, derbyspawns3[j][0], derbyspawns3[j][1],derbyspawns3[j][2]);

and keep in mind that if the second dimension is 3 in derbyspawns3 array, then the valid indexes are between 0 and 2 so the 3 as angle will be out of bounds unless the size is 4 or none specified.