buy and sell two EMAS for Amibroker (AFL)

Plot(EMA(C,6),"EMA6", colorGreen ); 
Plot(EMA(C,17),"EMA17", colorBlue ); 
Plot(EMA(C,34),"EMA34", colorRed );
Plot(C,"low", colorBrown);


Alvo = 0; 

Buy = High > Ref(H,-1) AND Low >= Ref(L,-1) AND Low >= EMA(C,17)AND EMA(C,17) >= EMA(C,34) AND EMA(C,6) >= EMA(C,17)AND((Low / EMA(C,17)-1)*100) <= 0.15 ;

Compra = IIf(Buy==True, Ref(H,-1)+0.01,0);

stop = IIf(Buy==True,Ref(L, -1)-0.02,0);

Alvo = Compra + ((Compra-stop)*2);

Sell = ((High / EMA(C,17)-1)*100) >= 0.40 OR IIf(Hour() > 17,True,False);

//Sell =  Low < Ref(L,-1) AND High > Ref(H,-1);

//Sell = Alvo >= High; // AND Hour() < 18;

//Sell = IIf(EMA(C,17) >= EMA(Ref(C,-2),17),False,True); // vende quando as medias moveis cai

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

dist = 2*ATR(10); 

for( i = 0; i < BarCount; i++ ) 
{ 
if( Buy[i] ) PlotText( "Compra:\n"+compra[i]+"\n Stop:\n" + stop[i]+"\n Alvo:\n" + Alvo[i], i, L[ i ]-dist[i], colorGreen ); 

if( Sell[i] ) PlotText( "Venda\n@" + C[ i ], i, H[ i ]+dist[i], colorRed, colorYellow ); 
} 


PlotShapes(Buy*shapeUpArrow,colorGreen,0,Low);
PlotShapes(Sell*shapeDownArrow,colorRed,0,High);