[Jack-]

how do i fix this error

Код:

(26) : error 017: undefined symbol "PlayerName"
Pawn compiler 3.2.3664	 	 	Copyright © 1997-2006, ITB CompuPhase


1 Error.

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
    if (strcmp("/lockdown", cmdtext, true, 10) == 0)
    {
        if(!strcmp(PlayerName(playerid), "Jack" ))
        SendClientMessageToAll(COLOUR_RED,"WARNING: Abandoned Airfield On Lock Down");
        MoveObject(window, 413.834960,2530.024169,20.169763, 2.500);
        MoveObject(window1, 411.896423,2530.024169,20.192766, 2.500);
        MoveObject(window2, 411.978424,2530.058105,20.166105, 2.500);
        MoveObject(window3, 416.770385,2530.058105,20.174055, 2.500);
        return 1;
    }