[Threshold]

This will fit the bill:

pawn Код:

new Siren[MAX_VEHICLES];
new SObj[MAX_VEHICLES];

public OnPlayerCommandText(playerid, cmdtext[])
{
    if(strcmp("/siren", cmdtext, true) == 0)
    {
        new veh;
        veh = GetPlayerVehicleID(playerid);
        if(!Siren[veh])
        {
            SObj[veh] = CreateObject(19419, 0, 0, 0, 0, 0, 0);
            AttachObjectToVehicle(SObj[veh], veh, 0.009999, -0.019999, 0.944999, 0.000000, 0.000000, 0.000000);
            SendClientMessage(playerid, red, "You've Added a siren to your vehicle");
            Siren[veh] = 1;
            return 1;
        }
        else
        {
            DestroyObject(SObj[veh]);
            Siren[veh] = 0;
            SendClientMessage(playerid, red, "You've removed a siren from your vehicle");
            return 1;
        }
        return 1;
    }
    return 0;
}

@EAsT-OAK_510 - Just noticed your signature