new pickup;

public OnGameModeInit()
{
    pickup = CreatePickup(1274, 2, 0.0, 0.0, 9.0);
    //       CreatePickup(model, type, Float:X, Float:Y, Float:Z, Virtualworld)
    return 1;
}

public OnPlayerPickUpPickup(playerid, pickupid)
{
    if(pickupid == pickup)
    {
        // Do your code here example
        SendClientMessage(playerid, -1, "Message here");
        return 1;
    }
    return 1;
}