macd1= exponentialaverage[8](close)-exponentialaverage[233](close) signal1= average[233,1](macd1) hist1= macd1-signal1 macd2= exponentialaverage[8](close)-exponentialaverage[377](close) signal2= average[377,1](macd2) hist2= macd2-signal2 return hist2 coloured(230,230,250) style(histogram),hist1 coloured(0,0,255) style(histogram) Hi guys, i have this code for the John Carter wave C indicator and only one of the histograms is showing up. Can anyone tell me why? Is there a limit to a length of a moving average in PRT? Any help as usual much appreciated. Best wishes