[yusei]

use the following :

PHP код:

new myobject[MAX_PLAYERS];
new bool: siren[MAX_PLAYERS];
CMD:siren(playerid, params[])
{
    if(siren[playerid] == false)
    {
        if(GetVehicleModel(GetPlayerVehicleID(playerid)) == 560 || GetVehicleModel(GetPlayerVehicleID(playerid)) == 415 || GetVehicleModel(GetPlayerVehicleID(playerid)) == 541)
        {
            myobject[playerid] = CreateObject(18646,0,0,-1000,0,0,0,100);
            AttachObjectToVehicle(myobject[playerid], GetPlayerVehicleID(playerid), 0.449999,0.000000,0.599999,0.000000,0.000000,0.000000);
            siren[playerid] = true;
            return 1;
        }
    }
    if(siren[playerid] == true)
    {
        DestroyObject(myobject[playerid]);
        siren[playerid] = false;
        return 1;
    }
    return 1;
}