Perfect Buy Sell Zone Line - Amibroker AFL Code

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_SECTION_BEGIN("ABV");
P1 = Param("Short Period",7,0,100,1);
P2 = Param("Long Period",60,0,100,1);
L1=Param("Threshold",4,2,10,1);
U= MA(C,P1)-MA(C,P2);
R=100*U/MA(C,P2);
MyColor=IIf(R>L1, colorGreen,colorRed);
Plot( R,"ABV",Mycolor, styleLine);
_SECTION_END();