[Pomoc] GetPlayerSpeed

ovako dode mi dva errora:

1.error 017: undefined symbol "GetPlayerSpeed": evo linija: new kmh = GetPlayerSpeed(targetid, true);

2..error 017: undefined symbol "GetPlayerSpeed:
linija: format(str,128,"My speed is %d km/h and %d mph !",GetPlayerSpeed(playerid,true),GetPlayerSpeed(playerid,false));

ne zelim da mi kazete ja nezz nista bla bla dodite na mod pa cete vidjet no ugl mozete mi pomoc oko toga.

Hvala Unaprijed.

Kak da je dodam jer nikad nisam imao to.Hvala

Stavi ovako

stock GetPlayerSpeed(playerid,bool:kmh) 
{
    new Float:Vx,Float:Vy,Float:Vz,Float:rtn;
    if(IsPlayerInAnyVehicle(playerid)) GetVehicleVelocity(GetPlayerVehicleID(playerid),Vx,Vy,Vz); else GetPlayerVelocity(playerid,Vx,Vy,Vz);// ovo provjerava dali je igrac u autu i kako se krece
    rtn = floatsqroot(floatabs(floatpower(Vx + Vy + Vz,2)));
    return kmh?floatround(rtn * 100 * 1.61):floatround(rtn * 100);// Ovo izracunava tako da ti dobis kojom brzinom vozis

// Ovo je Spedometar 
}

i to je to

Da znam malo sam se zeznuo... Da uzima islo bi GetPlayerPos