Is there any AFL script which can auto execute option strategies? For ex: give siganls when NIFTY straddle crosses a particular price

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As per your condition.

AFL for Price Action

//R2: - Pri color assignment modified 
//R1: - Only background setting changed nothing special
_SECTION_BEGIN("Chart Settings");
SetChartOptions(0,chartShowArrows|chartShowDates);
SetChartBkColor(ParamColor("Outer Panel",colorPaleBlue));
SetChartBkGradientFill(ParamColor("Upper Chart",1),ParamColor("Lower Chart",23));
GraphXSpace=Param("GraphXSpace",10,0,100,1);
dec = (Param("Decimals",2,0,7,1)/10)+1;
bi = BarIndex();
Lbi = LastValue(BarIndex());
sbi = SelectedValue(bi);
x1= BarCount-1;
Title = EncodeColor(55)+ Title = Name() + " " + EncodeColor(32) + Date() +
" " + EncodeColor(5) + "{{INTERVAL}} " +
EncodeColor(55)+ " Open = "+ EncodeColor(52)+ WriteVal(O,dec) + 
EncodeColor(55)+ " High = "+ EncodeColor(5) + WriteVal(H,dec) +
EncodeColor(55)+ " Low = "+ EncodeColor(32)+ WriteVal(L,dec) + 
EncodeColor(55)+ " Close = "+ EncodeColor(52)+ WriteVal(C,dec)+
EncodeColor(55)+ " Volume = "+ EncodeColor(52)+ WriteVal(V,1);
_SECTION_END();
//=================
_SECTION_BEGIN("ZERODHA Price Action");
P = ParamField( "Price field" );
CandleT=ParamToggle("Candlestick Display","No|Yes",defaultval=1 ); 
BarT=ParamToggle("Bar Display","No|Yes",defaultval=0 );
LineT=ParamToggle("Line Display","No|Yes",defaultval=0 );
//T3MA toggle
T3MAT=ParamToggle("Moving Average","No|Yes",defaultval=1 ); 
//T3MA Check Periods
T3MAP = Param("T3MA Periods", 21, 2, 300, 1, 10 );
function T3(price,periods)
{
s = 0.84;
e1=EMA(price,periods);
e2=EMA(e1,Periods);
e3=EMA(e2,Periods);
e4=EMA(e3,Periods);
e5=EMA(e4,Periods);
e6=EMA(e5,Periods);
c1=-s*s*s;
c2=3*s*s+3*s*s*s;
c3=-6*s*s-3*s-3*s*s*s;
c4=1+3*s+s*s*s+3*s*s;
Ti3=c1*e6+c2*e5+c3*e4+c4*e3;
return ti3;
}
T3MA = T3(P,T3MAP);
for( i = 1; i < BarCount; i++ ) 
{
//assignments
NvadaOpen[i] = Close[i-1];
NvadaClose[i]=Close[i];
NvadaHigh[i]=IIf(NvadaOpen[i]>=NvadaClose[i],NvadaOpen[i],NvadaClose[i]);
NvadaLow[i]=IIf(NvadaOpen[i]>=NvadaClose[i],NvadaClose[i],NvadaOpen[i]);
averagechange[i]=(NvadaOpen[i]+NvadaClose[i])/2;
//=============================
//CHECKS

//check1= uptrend and upbar as referred for last 2 bars
Check1[i]=averagechange[i]>T3MA[i] AND NvadaClose[i]>=NvadaOpen[i-2];
//check2= uptrend and downbar as referred for last 2 bars
Check2[i]=averagechange[i]>T3MA[i] AND NvadaClose[i]<NvadaOpen[i-2];

//check3= downtrend and downbar as referred for last 2 bars
Check3[i]=averagechange[i]<T3MA[i] AND NvadaClose[i]<=NvadaOpen[i-2];
//check4= downtrend and upbar as referred for last 2 bars
Check4[i]=averagechange[i]<T3MA[i] AND NvadaClose[i]>NvadaOpen[i-2];

//check5=check2 or check 4 => possible corrections!
Check5[i]=Check2[i] OR Check4[i];

//Color assignment
if(Check1[i]==1){pricolor[i] =colorGreen;}
if(Check3[i]==1){pricolor[i] =colorRed;}
if(Check5[i]==1){pricolor[i] =colorYellow;}
//Pricolor = IIf(NvadaClose>Ref(NvadaOpen,-2),colorGreen,colorRed);
}

//price Display
//if(CandleT==1){PlotOHLC( NvadaOpen, NvadaHigh, NvadaLow, NvadaClose, "", pricolor, styleCandle | styleThick );}
if(CandleT==1){PlotOHLC( NvadaOpen, NvadaHigh, NvadaLow, NvadaClose, "", pricolor, styleCandle );}
if(BarT==1){PlotOHLC( NvadaOpen, NvadaHigh, NvadaLow, NvadaClose, "", pricolor, styleBar | styleThick );}
if(LineT==1){PlotOHLC( NvadaOpen, NvadaHigh, NvadaLow, NvadaClose, "", pricolor, styleLine | styleThick );}

//T3MA Display
if(T3MAT==1)
{
T3MAcolor = IIf(C>=T3MA,colorGreen,colorRed);
Plot(T3MA,"T3MA",T3MAcolor,styleThick);
}
_SECTION_END(); 

Can you explain in simple English language what this code does?

Hi,
A slight modification to above question. Could you give a solution where i would like to exit my trade in a long straddle by reaching my profit (say 5000 rs) other than target.
And addition to that all my other existing orders ( Tgt & SL) should also get cancelled, one the profit of 5000 rs achieved.
Please.