Tacho 4 Error

Hey, hier die Errors :
C:\Users\Brandon\Desktop\[Ger]Your Second Familie[0.3x]\gamemodes\Familie.pwn(435) : error 017: undefined symbol "X1"
C:\Users\Brandon\Desktop\[Ger]Your Second Familie[0.3x]\gamemodes\Familie.pwn(435) : warning 215: expression has no effect
C:\Users\Brandon\Desktop\[Ger]Your Second Familie[0.3x]\gamemodes\Familie.pwn(435) : error 001: expected token: ";", but found "]"
C:\Users\Brandon\Desktop\[Ger]Your Second Familie[0.3x]\gamemodes\Familie.pwn(435) : error 029: invalid expression, assumed zero
C:\Users\Brandon\Desktop\[Ger]Your Second Familie[0.3x]\gamemodes\Familie.pwn(435) : fatal error 107: too many error messages on one line

Compilation aborted.Pawn compiler 3.2.3664 Copyright (c) 1997-2006, ITB CompuPhase

4 Errors.

Script :

public UpdateTacho()
{
for(new i = 0;i<MAX_PLAYERS;i++)
{
if(IsPlayerConnected(i) && GetPlayerState(i) == PLAYER_STATE_DRIVER && !IsPlayerNPC(i))
{
new Float:Strecke,Float:Geschwindigkeit;
GetVehiclePos(GetPlayerVehicleID(i),X1[i],Y1[i],Z1[i]);//Zeile 435
Strecke = floatsqroot(floatpower(floatabs(floatsub(X1[i],X2[i])),2)+floatpower(floatabs(floatsub(Y1[i],Y2[i])),2)+floatpower(floatabs(floatsub(Z1[i],Z2[i])),2));
Geschwindigkeit = (Strecke / (TACHOTIMER/1000)) * 3.6;
new String[50];
format(String,50,"Mein Tacho.\nGeschwindigkeit: %d km/h",floatround(Geschwindigkeit));
TextDrawSetString(Tacho[i],String);
GetVehiclePos(GetPlayerVehicleID(i),X2[i],Y2[i],Z2[i]);
TextDrawShowForPlayer(i,Tacho[i]);
}
else
{
TextDrawHideForPlayer(i,Tacho[i]);
}
}
return 1;
}

Klappt nicht

Ja

C:\Users\Brandon\Desktop\[Ger]Your Second Familie[0.3x]\gamemodes\Familie.pwn(437) : error 028: invalid subscript (not an array or too many subscripts): "X1"
C:\Users\Brandon\Desktop\[Ger]Your Second Familie[0.3x]\gamemodes\Familie.pwn(437) : warning 215: expression has no effect
C:\Users\Brandon\Desktop\[Ger]Your Second Familie[0.3x]\gamemodes\Familie.pwn(437) : error 001: expected token: ";", but found "]"
C:\Users\Brandon\Desktop\[Ger]Your Second Familie[0.3x]\gamemodes\Familie.pwn(437) : error 029: invalid expression, assumed zero
C:\Users\Brandon\Desktop\[Ger]Your Second Familie[0.3x]\gamemodes\Familie.pwn(437) : fatal error 107: too many error messages on one line

Compilation aborted.Pawn compiler 3.2.3664 Copyright (c) 1997-2006, ITB CompuPhase

4 Errors.

public UpdateTacho()
{
for(new i = 0;i<MAX_PLAYERS;i++)
{
if(IsPlayerConnected(i) && GetPlayerState(i) == PLAYER_STATE_DRIVER && !IsPlayerNPC(i))
{
new Float:Strecke,Float:Geschwindigkeit;
new Float:X1, Float:Y1, Float:Z1;
GetVehiclePos(GetPlayerVehicleID(i),X1,Y1,Z1);
Strecke = floatsqroot(floatpower(floatabs(floatsub(X1[i],X2[i])),2)+floatpower(floatabs(floatsub(Y1[i],Y2[i])),2)+floatpower(floatabs(floatsub(Z1[i],Z2[i])),2));//Zeile 437
Geschwindigkeit = (Strecke / (TACHOTIMER/1000)) * 3.6;
new String[50];
format(String,50,"Mein Tacho.\nGeschwindigkeit: %d km/h",floatround(Geschwindigkeit));
TextDrawSetString(Tacho[i],String);
GetVehiclePos(GetPlayerVehicleID(i),X2[i],Y2[i],Z2[i]);
TextDrawShowForPlayer(i,Tacho[i]);
}
else
{
TextDrawHideForPlayer(i,Tacho[i]);
}
}
return 1;
}