PLEASE HELP FIX ERROR WHILE SCAN IN BELOW AFL

#1
PLEASE HELP FIX ERROR WHILE SCAN IN BELOW AFL


_SECTION_BEGIN("VK");

sx=Null;b=Null;ai=Null;x=Null;
reg=x1=x2=x3=z1=z2=z3=Null;
rega=x1a=x2a=x3a=z1a=z2a=z3a=Null;

bi=BarIndex();
U=LastValue(bi);
order=Param("n-th Order",3,1,8,1);
bars=Param("Lookback Period",100,50,500,1);
sv=ParamToggle("Use Selected Value","Off|On",1);
alt=ParamToggle("Error Levels","Fibonacci|Standard",0);
ecart=1.61803399;

if(sv)
{
eb=SelectedValue(bi);
bb=Max(0,eb-bars);
}
else
{
bb=Max(0,eb-bars);
}
fin=eb;
nn=order+1;
sx[1]=bars+1;

if(fin>bars)
{
for(mi=1;mi<=2*nn-2;mi++)
{
suml=0;
for(n=0;n<=bars;n++)
{
suml=suml+n^mi;
}
sx[mi+1]=suml;
}
for(mi=1;mi<=nn;mi++)
{
suml=0;
for(n=0;n<=bars;n++)
{
if (mi==1)
suml=suml+Close[fin-n];
else
suml=suml+Close[fin-n]*n^(mi-1);
b[mi]=suml;
}
}
for(jj=1;jj<=nn;jj++)
{
for(ii=1;ii<=nn;ii++)
{
kk=ii+jj-1;
ai[(ii-1)*nn+jj]=sx[kk];
}
}
for(kk=1;kk<=nn-1;kk++)
{
ll=0;
mm=0;
for(ii=kk;ii<=nn;ii++)
{
if(abs(ai[(ii-1)*nn+kk])>mm)
{
mm=abs(ai[(ii-1)*nn+kk]);
ll=ii;
}
}
if(ll==0) break;
if(ll!=kk)
{
for(jj=1;jj<=nn;jj++)
{
tt=ai[(kk-1)*nn+jj];
ai[(kk-1)*nn+jj]=ai[(ll-1)*nn+jj];
ai[(ll-1)*nn+jj]=tt;
}
tt=b[kk];
b[kk]=b[ll];
b[ll]=tt;
}
for(ii=kk+1;ii<=nn;ii++)
{
qq=ai[(ii-1)*nn+kk]/ai[(kk-1)*nn+kk];
for(jj=1;jj<=nn;jj++)
{
if(jj==kk)
ai[(ii-1)*nn+jj]=0;
else
ai[(ii-1)*nn+jj]=ai[(ii-1)*nn+jj]-qq*ai[(kk-1)*nn+jj];
}
b[ii]=b[ii]-qq*b[kk];
}
}
x[nn]=b[nn]/ai[nn*nn];
for(kk=1;kk<=nn-1;kk++)
{
tt=0;
ii=nn-kk;
for(jj=1;jj<=nn-ii;jj++)
{
tt=tt+ai[(ii-1)*nn+ii+jj]*x[ii+jj];
if(ai[(ii-1)*nn+ii]!=0)
x[ii]=(b[ii]-tt)/ai[(ii-1)*nn+ii];
}
}
for(n=0;n<=bars;n++)
{
suml=0;
for(kk=1;kk<=order;kk++)
{
suml=suml+x[kk+1]*n^kk;
}
reg[fin-n]=x[1]+suml;
}
}
SetChartOptions(0, chartShowDates);
if(alt)
{
dev=StDev(Close-reg,bars);
sd=dev[fin];
x1a=reg+sd*1;//68%
x2a=reg+sd*2;//95%
x3a=reg+sd*3;//99.83%
z1a=reg-sd*1;
z2a=reg-sd*2;
z3a=reg-sd*3;
Plot(C, "Close",colorLightGrey,styleCandle);
Plot(reg,"reg",colorBlue,1);
Plot(x3a,"x3a",ColorRGB(255,0,0),styleThick);
Plot(x2a,"x2a",ColorRGB(255,100,100),styleDashed);
Plot(x1a,"x1a",ColorRGB(255,200,200),styleDashed);
Plot(z3a,"z3a",ColorRGB(0,255,0),styleThick);
Plot(z2a,"z2a",ColorRGB(100,255,100),styleDashed);
Plot(z1a,"z1a",ColorRGB(200,255,200),styleDashed);
PlotOHLC(x3a,x3a,x1a,x1a,"",ColorRGB(30,0,0),styleCloud|styleNoLabel,0,0,0,-1);
PlotOHLC(z1a,z1a,z3a,z3a,"",ColorRGB(0,30,0),styleCloud|styleNoLabel,0,0,0,-1);
}
else
{
dev=StDev(Close,bars);
sd=ecart*dev[fin];
x1=reg+sd/(1.382*1.618);
x2=reg+sd/1.382;
KTop =x3=reg+sd;//Upper Band
z1=reg-sd/(1.382*1.618);
z2=reg-sd/1.382;
KBottom =z3=reg-sd;//Lower Band
Plot(C, "Close",colorLightGrey,styleCandle);
KMid =Plot(reg,"reg",colorBlue,1);
Plot(x3,"x3",ColorRGB(255,0,0),styleThick);
Plot(x2,"x2",ColorRGB(255,100,100),styleLine|styleDots);
Plot(x1,"x1",ColorRGB(255,200,200),styleDashed);
Plot(z3,"z3",ColorRGB(0,255,0),styleThick);
Plot(z2,"z2",ColorRGB(100,255,100),styleLine|styleDots);
Plot(z1,"z1",ColorRGB(200,255,200),styleDashed);
PlotOHLC(x3,x3,x2,x2,"",ColorRGB(30,0,0),styleCloud|styleNoLabel,0,0,0,-1);
PlotOHLC(z2,z2,z3,z3,"",ColorRGB(0,30,0),styleCloud|styleNoLabel,0,0,0,-1);
}

printf("\nKTop : " + KTop );
printf("\nKBottom : " + KBottom );





Buy=(Low <=Kbottom);

Sell=(Ktop <=High);


BuyPrice=KBOTTOM;
SellPrice=KTOP;

Buy = ExRem(Buy,Sell);
Sell = ExRem(Sell,Buy);


printf("\nBuy : " + Buy );
printf("\nSell : " + Sell );

/* Plot Buy and Sell Signal Arrows */
PlotShapes(IIf(Buy, shapeSquare, shapeNone),colorGreen, 0, L, Offset=-25);
PlotShapes(IIf(Buy, shapeSquare, shapeNone),colorLime, 0,L, Offset=-35);
PlotShapes(IIf(Buy, shapeUpArrow, shapeNone),colorWhite, 0,L, Offset=-30);
PlotShapes(IIf(Sell, shapeSquare, shapeNone),colorRed, 0, H, Offset=25);
PlotShapes(IIf(Sell, shapeSquare, shapeNone),colorOrange, 0,H, Offset=35);
PlotShapes(IIf(Sell, shapeDownArrow, shapeNone),colorWhite, 0,H, Offset=-30);

_SECTION_END();
_SECTION_END();
//============== TITLE ==============

_SECTION_BEGIN("Magnified Market Price");
FS=Param("Font Size",30,11,100,1);
GfxSelectFont("Times New Roman", FS, 700, True );
GfxSetBkMode( colorWhite );
GfxSetTextColor( ParamColor("Color",colorGold) );
Hor=Param("Horizontal Position",570,1,1200,1);
Ver=Param("Vertical Position",50,1,830,1);
GfxTextOut(""+C, Hor , Ver );
YC=TimeFrameGetPrice("C",inDaily,-1);
DD=Prec(C-YC,2);
xx=Prec((DD/YC)*100,2);
GfxSelectFont("Times New Roman", 11, 700, True );
GfxSetBkMode( colorWhite );
GfxSetTextColor(ParamColor("Color",colorBlack) );
GfxTextOut(""+DD+" ("+xx+"%)", Hor , Ver+45 );

_SECTION_END();
_SECTION_BEGIN("Price Line");
dp= Param("dps",3,0,1000,1);
PriceLineColor=ParamColor("PriceLineColor",colorOrange);
PriceLevel = ParamField("PriceField", field = 3 );
PriceLeve2 = ParamField("PriceField", field = dp );
Daysback = Param("Bars Back",1,10,500,1);
FirstBar = BarCount - DaysBack;
YY = IIf(BarIndex() >= Firstbar,EndValue(PriceLevel),Null);

Plot(YY,"Current Price",PriceLineColor,ParamStyle("LineStyle",styleLine|styleDashed|styleNoTitle|styleNoLabel|styleThick,maskAll));

side = Param("side",1,0,1000,1);

dist = 0;

for( i = 0; i < BarCount; i++ )
{
if(i+side== BarCount) PlotText( "\n " + PriceLevel[ i ], i, YY[ i ]-dist, colorGold );

}

_SECTION_END();


_SECTION_BEGIN("sys");

x=Param("xposn",315,0,1000,1);
y=Param("yposn",576,0,1000,1);



_SECTION_END();

_SECTION_BEGIN("Background text");
C11=ParamColor("up panel",colorBlack );
C12=ParamColor("dn panel",colorBlack );
C13=Param("fonts",20,10,30,1 );
C14=Param("left-right",2.1,1.0,5.0,0.1 );
C15=Param("up-down",8,1,30,1 );
Miny = Status("axisminy");
Maxy = Status("axismaxy");
lvb = Status("lastvisiblebar");
fvb = Status("firstvisiblebar");
pxwidth = Status("pxwidth");
pxheight = Status("pxheight");
GfxSetBkMode( 0 );
GfxSelectFont("Tahoma", 12, 500, False, False, 0);
GfxSetTextColor(colorCustom12);
GfxSetTextAlign( 6 );
GfxSelectFont("Tahoma", 15, 600, False, False, 0);
GfxSetTextColor(colorWhite);
GfxSetTextAlign( 6 );

GfxSelectFont("Tahoma", 12, 400, False, False, 0);
GfxSetTextColor(colorBrightGreen);

GfxSelectFont("Tahoma", 12, 400, False, False, 0);
GfxSetTextColor(colorRed);




pricechange=(C-Ref(C,-1))*100/Ref(C,-1);
changeponit=C-Ref(C,-1);
Vlp=Param("Volume lookback period",15,10,300,10);
Vrg=MA(V,Vlp);
St = StDev(Vrg,Vlp);
Vp3 = Vrg + 3*st;
Vp2 = Vrg + 2*st;;
Vp1 = Vrg + 1*st;;
Vn1 = Vrg -1*st;
Vn2 = Vrg -2*st;

x=Param("xposn",1,0,1000,1);
y=Param("yposn",1,0,1000,1);

GfxGradientRect( 1, 1, 1400, 20, colorViolet, colorBlack);
GfxSetBkMode(0);
GfxSelectFont( "Georgia", 13, 800, False );
GfxSetTextColor( colorGold );
GfxTextOut( "PERFECT TRADE ", x+550, y+2 );
GfxSelectFont( "Tahoma", 13, 800, False );
GfxSetTextColor( colorGold );
GfxTextOut( Name(), x+65, y+2 );
GfxSelectFont( "Century Gothic", 10, 100, False );
GfxSetTextColor( colorGold );
GfxTextOut( Date(), x+1000, y+5 );
GfxSelectFont( "Comic Sans MS", 10, 500, False );
GfxSetTextColor( colorYellow );
GfxTextOut( Interval(2), x+175, y+5 );
//------------------------------------------------------------ H, L, O, C----------------------
GfxGradientRect( 1, 20, 1400, 25, colorViolet, colorBlack );
GfxSetBkMode(0);
GfxSelectFont( "Areal", 11, 200, False );
GfxSetTextColor( colorBlue );
GfxTextOut( "Open:"+WriteVal(O,1.2), x+270, y+5 );
GfxSelectFont( "Areal", 11, 200, False );
GfxSetTextColor( colorBrightGreen );
GfxTextOut( "High:"+WriteVal(H,1.2), x+380, y+5 );
GfxSelectFont( "Areal", 11, 200, False );
GfxSetTextColor( colorRed );
GfxTextOut( "Low:"+WriteVal(L,1.2), x+750, y+5 );
GfxSelectFont( "Areal", 11, 200, False );
GfxSetTextColor( colorGold );
GfxTextOut( "Close:"+WriteVal(C,1.2), x+850, y+5 );
GfxSelectFont( "comic sans ms", 12, 100, False );

_SECTION_END();
 

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