[[IND]Crazy]

I Have This Eror

pawn Код:

C:\DOCUME~1\user\Desktop\Server\PARADI~1\FILTER~1\HitSound.pwn(53) : error 017: undefined symbol "amount"
C:\DOCUME~1\user\Desktop\Server\PARADI~1\FILTER~1\HitSound.pwn(54) : error 017: undefined symbol "playerid"
C:\DOCUME~1\user\Desktop\Server\PARADI~1\FILTER~1\HitSound.pwn(55) : error 017: undefined symbol "playerid"
C:\DOCUME~1\user\Desktop\Server\PARADI~1\FILTER~1\HitSound.pwn(56) : error 017: undefined symbol "playerid"
C:\DOCUME~1\user\Desktop\Server\PARADI~1\FILTER~1\HitSound.pwn(57) : error 017: undefined symbol "playerid"
Pawn compiler 3.2.3664          Copyright (c) 1997-2006, ITB CompuPhase


5 Errors.

and this is my script

pawn Код:

public OnPlayerShootPlayer(Shooter,Target,Float:HealthLost,Float:ArmourLost)
{
    new s[20];
    format(s, 20, "+Damage %.0f", amount);
    TextDrawSetString(GiveDamage[playerid], s);
    TextDrawShowForPlayer(playerid, GiveDamage[playerid]);
    PlayerPlaySound(playerid,17802,0.0,0.0,0.0);
    SetTimerEx("DestruirTextoDraw", 1000, false, "i", playerid);
    return 1;
}

Thanks Before