[Undef1ned]

Then, do a debugging.

PHP код:

public OnPlayerPickUpPickup(playerid, pickupid)  
{  
    if(pickupid == Pickups[0]) 
    { 
        print("pickup 1");
        ChangeVehicle(playerid, 451); 
        return 1; 
    } 
    else if(pickupid == Pickups[1]) 
    {
        print("pickup 2");
        ChangeVehicle(playerid, 411); 
        return 1; 
    } 
    return 1;  
}