Bollinger Keltner Band Trading - Amibroker AFL Code

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/* Bollinger - Keltner Bands */

BBLength= Param("BBLength",10,2,30,2);
StdDv= Param("Stdev",2,0.5,5,0.1);
K1= Param("Kelt EMA Periods?",5,3,50);
K2= Param("ATR Periods?",10,2,50);
Mul= Param("ATR Multiplier?",1,0.5,5,0.5);
Mi=EMA(C, K1);
Kel= ATR(K2)*Mul;
UB= Mi + Kel;
LB= Mi - Kel;
UpB=BBandTop(H,BBLength,StdDv);
Mdb=MA(C, BBLength);
DnB=BBandBot(L,BBLength,StdDv);
Plot (Close, "close",1,64);
Plot (Mi,"",3,1);
Plot (UB,"",3,1);
Plot (LB,"",3,1);
Plot(UpB,"",12,1);
Plot(MdB,"",12,1);
Plot(DnB,"",12,1);
GraphXSpace=4;
Title=Name()+ EncodeColor (colorViolet )+  "   Bollinger - Keltner Bands: " +"\n"+"RESISTANCE = "+WriteVal(UpB,1.2) + ", " +WriteVal (Ub,1.2) + "   SUPPORT = " +WriteVal (Lb,1.2) + ", "+ WriteVal(Dnb,1.2);