diff --git a/Indicators/MyIndicators/CHO_Pro.mq5 b/Indicators/MyIndicators/CHO_Pro.mq5
new file mode 100644
index 0000000..d8c41aa
--- /dev/null
+++ b/Indicators/MyIndicators/CHO_Pro.mq5
@@ -0,0 +1,117 @@
+//+------------------------------------------------------------------+
+//|                                                       CHO_Pro.mq5|
+//|                                          Copyright 2025, xxxxxxxx|
+//|                                                                  |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property link      ""
+#property version   "2.01" // Corrected calculator call signature
+#property description "Professional Chaikin Oscillator (CHO) with selectable MA type and"
+#property description "candle source (Standard or Heikin Ashi) for the underlying ADL."
+
+//--- Indicator Window and Plot Properties ---
+#property indicator_separate_window
+#property indicator_buffers 1
+#property indicator_plots   1
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrLightSeaGreen
+#property indicator_label1  "CHO"
+#property indicator_level1  0.0
+#property indicator_levelstyle STYLE_DOT
+
+//--- Include the calculator engine ---
+#include <MyIncludes\CHO_Calculator.mqh>
+
+//--- 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                 InpFastPeriod   = 3;
+input int                 InpSlowPeriod   = 10;
+input ENUM_MA_METHOD      InpMaMethod     = MODE_EMA;
+input ENUM_APPLIED_VOLUME InpVolumeType   = VOLUME_TICK;
+input ENUM_CANDLE_SOURCE  InpCandleSource = CANDLE_STANDARD; // Candle source for ADL
+
+//--- Indicator Buffers ---
+double    BufferCHO[];
+
+//--- Global calculator object (as a base class pointer) ---
+CCHOCalculator *g_calculator;
+
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function.                        |
+//+------------------------------------------------------------------+
+int OnInit()
+  {
+//--- Map the buffer and set as non-timeseries
+   SetIndexBuffer(0, BufferCHO, INDICATOR_DATA);
+   ArraySetAsSeries(BufferCHO, false);
+
+//--- Dynamically create the appropriate calculator instance
+   switch(InpCandleSource)
+     {
+      case CANDLE_HEIKIN_ASHI:
+         g_calculator = new CCHOCalculator_HA();
+         IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("CHO HA(%d,%d)", InpFastPeriod, InpSlowPeriod));
+         break;
+      default: // CANDLE_STANDARD
+         g_calculator = new CCHOCalculator_Std();
+         IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("CHO(%d,%d)", InpFastPeriod, InpSlowPeriod));
+         break;
+     }
+
+//--- Check if creation was successful and initialize
+   if(CheckPointer(g_calculator) == POINTER_INVALID || !g_calculator.Init(InpFastPeriod, InpSlowPeriod, InpMaMethod, InpVolumeType))
+     {
+      Print("Failed to create or initialize CHO Calculator object.");
+      return(INIT_FAILED);
+     }
+
+//--- Set indicator display properties
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, g_calculator.GetSlowPeriod() - 1);
+   IndicatorSetInteger(INDICATOR_DIGITS, 0);
+
+   return(INIT_SUCCEEDED);
+  }
+
+//+------------------------------------------------------------------+
+//| Custom indicator deinitialization function.                      |
+//+------------------------------------------------------------------+
+void OnDeinit(const int reason)
+  {
+//--- Free the calculator object to prevent memory leaks
+   if(CheckPointer(g_calculator) != POINTER_INVALID)
+      delete g_calculator;
+  }
+
+//+------------------------------------------------------------------+
+//| Custom indicator calculation function.                           |
+//+------------------------------------------------------------------+
+int OnCalculate(const int rates_total,
+                const int prev_calculated,
+                const datetime &time[],
+                const double &open[],
+                const double &high[],
+                const double &low[],
+                const double &close[],
+                const long &tick_volume[],
+                const long &volume[],
+                const int &spread[])
+  {
+//--- Ensure the calculator object is valid
+   if(CheckPointer(g_calculator) == POINTER_INVALID)
+      return 0;
+
+//--- Delegate the entire calculation to our calculator object
+//--- CORRECTED: Pass the 'open' array to the calculator
+   g_calculator.Calculate(rates_total, open, high, low, close, tick_volume, volume, BufferCHO);
+
+//--- Return rates_total for a full recalculation, ensuring stability
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+