Cum pun un npc sa te urmeze?

[mura]

Am incercat de pe un tutorial ceva cu settimer

public OnPlayerText(playerid, text[])

{

    new JackID = GetPlayerID("Jack");

    new Float:x,Float:y,Float:z;

    GetPlayerPos(JackID,x,y,z);

    if(IsPlayerFacingPlayer(playerid,JackID,10.0))

    {

        if(strfind(text, "Follow me") != -1 && IsPlayerInRangeOfPoint(playerid,5.0,x,y,z))

        {

            SetPlayerChatBubble(JackID,"Ok!",white, 100.0, 5000);

            SetTimerEx("GetJackToFolow",100,1,"i",playerid);

            ApplyAnimation(JackID,"PED","WALK_PLAYER",4.1,1,1,1,1,0);

            return 1;

        }

    }

    return 1;

} nu mere.Imi da eroare la getplayerid cu unfinded symbol...nui dau de cap.

[mura]

da chear nimeni ?:(