Buying Selling Volume for Amibroker (AFL)

SetBarsRequired(sbrAll,sbrAll);

// BUYING VOLUME AND SELLING VOLUME //

BV = IIf( (H==L), 0, V*(C-L)/(H-L) );
SV = IIf( (H==L), 0, V*(H-C)/(H-L) );

PlotOHLC(SV,SV,0,0,"SellVolume",colorRed,styleCandle|styleNoTitle|styleNoLabel );
PlotOHLC(SV,BV+SV,SV,BV+SV,"BuyVolume",colorbrightgreen ,styleCandle|styleNoTitle|styleNoLabel );

Va = MA(V,30);

PlotOHLC( Va, Va, 0, 0, "", ColorBlend( colorWhite , GetChartBkColor(), 0.4 ), styleNoLabel | styleCloud | styleNoRescale, Null, Null, Null, -1 );
Plot(Va,"Average Volume",colorRose,styleNoLine|styleNoLabel );

VI = V/Va;

Title = "SellVolume:"+WriteVal(SV,5.0)+"   "+"BuyVolume:"+WriteVal(BV,5.0)+"   "+"VolumeIndex:"+WriteVal(VI,1.2)+"   "+
"BuyVolume:"+WriteVal(100*BV/(BV+SV),2.0)+"%"+"   "+"SellVolume:"+WriteVal(100*SV/(BV+SV),2.0)+"%";