diff --git a/Indicators/MyIndicators/WPR_Pro.mq5 b/Indicators/MyIndicators/WPR_Pro.mq5
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+//+------------------------------------------------------------------+
+//|                                                       WPR_Pro.mq5|
+//|                                          Copyright 2025, xxxxxxxx|
+//|                                                                  |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property link      ""
+#property version   "3.00"
+#property description "Professional Williams' Percent Range (WPR) with optional signal line"
+#property description "and selectable candle source (Standard or Heikin Ashi)."
+
+//--- Indicator Window and Plot Properties ---
+#property indicator_separate_window
+#property indicator_buffers 2 // WPR and Signal Line
+#property indicator_plots   2
+#property indicator_level1 -20.0
+#property indicator_level2 -80.0
+#property indicator_levelstyle STYLE_DOT
+#property indicator_maximum 0.0
+#property indicator_minimum -100.0
+
+//--- Plot 1: WPR line
+#property indicator_label1  "WPR"
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrDodgerBlue
+#property indicator_style1  STYLE_SOLID
+#property indicator_width1  1
+
+//--- Plot 2: Signal line
+#property indicator_label2  "Signal"
+#property indicator_type2   DRAW_LINE
+#property indicator_color2  clrRed
+#property indicator_style2  STYLE_DOT
+#property indicator_width2  1
+
+//--- Include the calculator engine ---
+#include <MyIncludes\WPR_Calculator.mqh>
+
+//--- Enum for Display Mode ---
+enum ENUM_DISPLAY_MODE
+  {
+   DISPLAY_WPR_ONLY,      // Display only the WPR line
+   DISPLAY_WPR_AND_SIGNAL // Display WPR and its signal line
+  };
+
+//--- Enum for selecting the candle source for calculation ---
+enum ENUM_CANDLE_SOURCE
+  {
+   CANDLE_STANDARD,      // Use standard OHLC data
+   CANDLE_HEIKIN_ASHI    // Use Heikin Ashi smoothed data
+  };
+
+//--- Input Parameters ---
+input int                InpWPRPeriod    = 14;
+input ENUM_CANDLE_SOURCE InpCandleSource = CANDLE_STANDARD;
+input group              "Signal Line Settings"
+input ENUM_DISPLAY_MODE  InpDisplayMode  = DISPLAY_WPR_AND_SIGNAL;
+input int                InpSignalPeriod = 3;
+input ENUM_MA_METHOD     InpSignalMAType = MODE_SMA;
+
+//--- Indicator Buffers ---
+double    BufferWPR[];
+double    BufferSignal[];
+
+//--- Global calculator object (as a base class pointer) ---
+CWPRCalculator *g_calculator;
+
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function.                        |
+//+------------------------------------------------------------------+
+int OnInit()
+  {
+   SetIndexBuffer(0, BufferWPR,    INDICATOR_DATA);
+   SetIndexBuffer(1, BufferSignal, INDICATOR_DATA);
+   ArraySetAsSeries(BufferWPR,    false);
+   ArraySetAsSeries(BufferSignal, false);
+
+   if(InpCandleSource == CANDLE_HEIKIN_ASHI)
+     {
+      g_calculator = new CWPRCalculator_HA();
+      IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("WPR HA(%d,%d)", InpWPRPeriod, InpSignalPeriod));
+     }
+   else
+     {
+      g_calculator = new CWPRCalculator();
+      IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("WPR(%d,%d)", InpWPRPeriod, InpSignalPeriod));
+     }
+
+   if(CheckPointer(g_calculator) == POINTER_INVALID || !g_calculator.Init(InpWPRPeriod, InpSignalPeriod, InpSignalMAType))
+     {
+      Print("Failed to create or initialize WPR Calculator object.");
+      return(INIT_FAILED);
+     }
+
+   IndicatorSetInteger(INDICATOR_DIGITS, 2);
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, InpWPRPeriod - 1);
+   PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, InpWPRPeriod + InpSignalPeriod - 2);
+
+   return(INIT_SUCCEEDED);
+  }
+
+//+------------------------------------------------------------------+
+//| Custom indicator deinitialization function.                      |
+//+------------------------------------------------------------------+
+void OnDeinit(const int reason)
+  {
+   if(CheckPointer(g_calculator) != POINTER_INVALID)
+      delete g_calculator;
+  }
+
+//+------------------------------------------------------------------+
+//| Custom indicator calculation function.                           |
+//+------------------------------------------------------------------+
+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, open, high, low, close, BufferWPR, BufferSignal);
+
+   if(InpDisplayMode == DISPLAY_WPR_ONLY)
+     {
+      for(int i=0; i<rates_total; i++)
+         BufferSignal[i] = EMPTY_VALUE;
+     }
+
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+