Four MA MACD Bollinger Band System - Amibroker AFL Code

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_SECTION_BEGIN("macd BB");
 
 
A2=MACD(9,34); 
BBtop=BBandTop(A2,5,.5); 
BBbot=BBandBot(A2,5,.5);
Color=IIf(a2 > bbtop, colorBlue,IIf(a2 < bbbot, colorRed,colorYellow));
bbtop_col = IIf (BBtop > Ref(BBtop,-1),colorBlue,colorRed);
bbbot_col = IIf (BBbot > Ref(BBbot,-1),colorBlue,colorRed);
Plot(a2,"",color,styleLine);
Plot(Signal(9,34,9),"",colorGreen,styleThick);
Plot(BBtop,"",BBtop_col,styleDashed);
Plot(BBbot,"",BBbot_col,styleDashed);
Plot(0,"",31,1);
Buy_macd = a2 > bbtop;
Sell_macd = a2 < bbbot;
//PlotShapes(Buy*shapeHollowSmallUpTriangle,colorYellow);
//PlotShapes(Sell*shapeHollowSmallDownTriangle,colorYellow);
//Plot(6, "", Color, styleOwnScale| styleArea|styleNoLabel,-0.5,100);
_SECTION_END();

_SECTION_BEGIN("RSI BB");

 
A1=EMA(RSI(5),21); 
BBtop=BBandTop(A1,5,.5); 
BBbot=BBandBot(A1,5,.5);
Color=IIf(a1 > bbtop, colorBlue,IIf(a1 < bbbot, colorRed,colorYellow));
bbtop_col = IIf (BBtop > Ref(BBtop,-1),colorBlue,colorRed);
bbbot_col = IIf (BBbot > Ref(BBbot,-1),colorBlue,colorRed);
//Plot(a1,"",color,styleLine);
//Plot(BBtop,"",BBtop_col,styleDashed);
//Plot(BBbot,"",BBbot_col,styleDashed);
//Plot(50,"",31,1);
Buy_rsi = a1 > bbtop;
Sell_rsi = a1 < bbbot;
Buy = Buy_rsi AND Buy_macd;
Sell = Sell_RSI AND Sell_macd;
Buy = ExRem(Buy,Sell);
Sell = ExRem(Sell,Buy);

PlotShapes(Buy*shapeHollowSmallUpTriangle,colorYellow);
PlotShapes(Sell*shapeHollowSmallDownTriangle,colorYellow);
Plot(6, "", IIf(Buy_rsi AND Buy_macd,colorGreen,IIf(Sell_macd AND Sell_rsi,colorRed,colorYellow)), styleOwnScale| styleArea|styleNoLabel,-0.5,100);
_SECTION_END();