diff --git a/Indicators/MyIndicators/Fourier_Series_Pro.mq5 b/Indicators/MyIndicators/Fourier_Series_Pro.mq5
new file mode 100644
index 0000000..b1cd4c9
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+++ b/Indicators/MyIndicators/Fourier_Series_Pro.mq5
@@ -0,0 +1,106 @@
+//+------------------------------------------------------------------+
+//|                                           Fourier_Series_Pro.mq5 |
+//|                                          Copyright 2025, xxxxxxxx|
+//|                                                                  |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property version   "1.00"
+#property description "John Ehlers' Fourier Series Model of the Market."
+
+#property indicator_separate_window
+#property indicator_buffers 2
+#property indicator_plots   2
+
+//--- Plot 1: Wave
+#property indicator_label1  "Wave"
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrRed
+#property indicator_style1  STYLE_SOLID
+#property indicator_width1  1
+
+//--- Plot 2: ROC
+#property indicator_label2  "ROC"
+#property indicator_type2   DRAW_LINE
+#property indicator_color2  clrBlue
+#property indicator_style2  STYLE_SOLID
+#property indicator_width2  1
+
+#property indicator_level1 0.0
+#property indicator_levelstyle STYLE_SOLID
+#property indicator_levelcolor clrGray
+
+#include <MyIncludes\Fourier_Series_Calculator.mqh>
+
+enum ENUM_PRICE_SOURCE { SOURCE_STANDARD, SOURCE_HEIKIN_ASHI };
+
+//--- Input Parameters ---
+input int               InpFundamentalPeriod = 20;    // Fundamental Period
+input double            InpBandwidth         = 0.1;   // Bandwidth for filters
+input bool              InpShowROC           = true;  // Show Rate of Change line
+input ENUM_PRICE_SOURCE InpSource            = SOURCE_STANDARD;
+
+//--- Indicator Buffers ---
+double    BufferWave[];
+double    BufferROC[];
+
+//--- Global calculator object ---
+CFourierSeriesCalculator *g_calculator;
+
+//+------------------------------------------------------------------+
+int OnInit()
+  {
+   SetIndexBuffer(0, BufferWave, INDICATOR_DATA);
+   SetIndexBuffer(1, BufferROC,  INDICATOR_DATA);
+   ArraySetAsSeries(BufferWave, false);
+   ArraySetAsSeries(BufferROC,  false);
+   PlotIndexSetDouble(1, PLOT_EMPTY_VALUE, EMPTY_VALUE);
+
+   if(InpSource == SOURCE_HEIKIN_ASHI)
+     {
+      g_calculator = new CFourierSeriesCalculator_HA();
+      IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("Fourier HA(%d)", InpFundamentalPeriod));
+     }
+   else
+     {
+      g_calculator = new CFourierSeriesCalculator();
+      IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("Fourier(%d)", InpFundamentalPeriod));
+     }
+
+   if(CheckPointer(g_calculator) == POINTER_INVALID || !g_calculator.Init(InpFundamentalPeriod, InpBandwidth))
+     {
+      Print("Failed to initialize Fourier Series Calculator.");
+      return(INIT_FAILED);
+     }
+
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, InpFundamentalPeriod * 2);
+   PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, InpFundamentalPeriod * 2 + 2);
+   IndicatorSetInteger(INDICATOR_DIGITS, 4);
+
+   return(INIT_SUCCEEDED);
+  }
+
+//+------------------------------------------------------------------+
+void OnDeinit(const int reason)
+  {
+   if(CheckPointer(g_calculator) != POINTER_INVALID)
+      delete g_calculator;
+  }
+
+//+------------------------------------------------------------------+
+int OnCalculate(const int rates_total, const int, const datetime&[], const double &open[], const double &high[], const double &low[], const double &close[], const long&[], const long&[], const int&[])
+  {
+   if(CheckPointer(g_calculator) == POINTER_INVALID)
+      return 0;
+
+   g_calculator.Calculate(rates_total, PRICE_MEDIAN, open, high, low, close, BufferWave, BufferROC);
+
+   if(!InpShowROC)
+     {
+      for(int i=0; i<rates_total; i++)
+         BufferROC[i] = EMPTY_VALUE;
+     }
+
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+