// Downloaded From https://www.WiseStockTrader.com
pds = Param("EMA periods", 21, 1, 112);


deviation=Param("deviation",32,2,350);      
 AvgX=EMA(C,pds);
  shift= EMA(C,pds)* (deviation)/1400;

  UpperBand=AvgX+shift;
  LowerBand=AvgX-shift;
 

 
 
  Plot(UpperBand ,"UpperBand",colorRed,styleLine ); //| styleThick
  Plot(Avgx , "MidleBand", colorYellow, styleLine ); //| styleThick 
  Plot(LowerBand, "LowerBand", colorGreen, styleLine ); //| styleThick