diff --git a/Indicators/MyIndicators/CCI_Precise.mq5 b/Indicators/MyIndicators/CCI_Precise.mq5
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+//+------------------------------------------------------------------+
+//|                                                 CCI_Precise.mq5  |
+//|                      Copyright 2025, xxxxxxxx                    |
+//|                                                                  |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property link      ""
+#property version   "1.00"
+#property description "Commodity Channel Index (Precise mathematical definition) with a signal line."
+
+//--- Indicator Window and Plot Properties ---
+#property indicator_separate_window
+#property indicator_buffers 2 // CCI and Signal Line
+#property indicator_plots   2
+#property indicator_level1 -100.0
+#property indicator_level2  100.0
+#property indicator_level3  0.0
+#property indicator_levelstyle STYLE_DOT
+
+//--- Plot 1: CCI line
+#property indicator_label1  "CCI"
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrLightSeaGreen
+#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  clrOrangeRed
+#property indicator_style2  STYLE_DOT
+#property indicator_width2  1
+
+//--- Input Parameters ---
+input int                InpCCIPeriod    = 20;
+input ENUM_APPLIED_PRICE InpAppliedPrice = PRICE_TYPICAL;
+input group              "Signal Line Settings"
+input int                InpMAPeriod     = 14;
+input ENUM_MA_METHOD     InpMAMethod     = MODE_SMA;
+
+//--- Indicator Buffers ---
+double    BufferCCI[];
+double    BufferSignal[];
+
+//--- Global Variables ---
+int       g_ExtCCIPeriod, g_ExtMAPeriod;
+const double CCI_CONSTANT = 0.015;
+
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function.                        |
+//+------------------------------------------------------------------+
+int OnInit()
+  {
+   g_ExtCCIPeriod = (InpCCIPeriod < 1) ? 1 : InpCCIPeriod;
+   g_ExtMAPeriod  = (InpMAPeriod < 1) ? 1 : InpMAPeriod;
+
+   SetIndexBuffer(0, BufferCCI,    INDICATOR_DATA);
+   SetIndexBuffer(1, BufferSignal, INDICATOR_DATA);
+
+   ArraySetAsSeries(BufferCCI,    false);
+   ArraySetAsSeries(BufferSignal, false);
+
+   int cci_draw_begin = g_ExtCCIPeriod - 1;
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, cci_draw_begin);
+   PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, cci_draw_begin + g_ExtMAPeriod - 1);
+   IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("CCI Precise(%d, %d)", g_ExtCCIPeriod, g_ExtMAPeriod));
+   IndicatorSetInteger(INDICATOR_DIGITS, 2);
+
+   return(INIT_SUCCEEDED);
+  }
+
+//+------------------------------------------------------------------+
+//| Commodity Channel Index (Precise) 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[])
+  {
+   int start_pos = g_ExtCCIPeriod + g_ExtMAPeriod - 1;
+   if(rates_total < start_pos)
+      return(0);
+
+//--- STEP 1: Prepare the source price array
+   double price_source[];
+   ArrayResize(price_source, rates_total);
+   for(int i=0; i<rates_total; i++)
+     {
+      switch(InpAppliedPrice)
+        {
+         case PRICE_OPEN:
+            price_source[i] = open[i];
+            break;
+         case PRICE_HIGH:
+            price_source[i] = high[i];
+            break;
+         case PRICE_LOW:
+            price_source[i] = low[i];
+            break;
+         case PRICE_MEDIAN:
+            price_source[i] = (high[i] + low[i]) / 2.0;
+            break;
+         case PRICE_TYPICAL:
+            price_source[i] = (high[i] + low[i] + close[i]) / 3.0;
+            break;
+         case PRICE_WEIGHTED:
+            price_source[i]= (high[i] + low[i] + 2*close[i]) / 4.0;
+            break;
+         default:
+            price_source[i] = close[i];
+            break;
+        }
+     }
+
+//--- STEP 2: Calculate CCI using the precise definition
+   for(int i = g_ExtCCIPeriod - 1; i < rates_total; i++)
+     {
+      // --- Calculate the SMA for the current position 'i' ---
+      double sma = 0;
+      for(int j=0; j<g_ExtCCIPeriod; j++)
+        {
+         sma += price_source[i-j];
+        }
+      sma /= g_ExtCCIPeriod;
+
+      // --- Calculate the Mean Absolute Deviation for the current position 'i' ---
+      double mad = 0;
+      for(int j=0; j<g_ExtCCIPeriod; j++)
+        {
+         mad += MathAbs(price_source[i-j] - sma);
+        }
+      mad /= g_ExtCCIPeriod;
+
+      // --- Calculate the final CCI value ---
+      if(mad > 0)
+        {
+         BufferCCI[i] = (price_source[i] - sma) / (CCI_CONSTANT * mad);
+        }
+     }
+
+//--- STEP 3: Calculate the Signal Line (MA of CCI)
+   int ma_start_pos = g_ExtCCIPeriod + g_ExtMAPeriod - 2;
+   for(int i = ma_start_pos; i < rates_total; i++)
+     {
+      switch(InpMAMethod)
+        {
+         case MODE_EMA:
+         case MODE_SMMA:
+            if(i == ma_start_pos)
+              {
+               double sum=0;
+               for(int j=0; j<g_ExtMAPeriod; j++)
+                  sum+=BufferCCI[i-j];
+               BufferSignal[i] = sum/g_ExtMAPeriod;
+              }
+            else
+              {
+               if(InpMAMethod == MODE_EMA)
+                 {
+                  double pr=2.0/(g_ExtMAPeriod+1.0);
+                  BufferSignal[i] = BufferCCI[i]*pr + BufferSignal[i-1]*(1.0-pr);
+                 }
+               else
+                  BufferSignal[i] = (BufferSignal[i-1]*(g_ExtMAPeriod-1)+BufferCCI[i])/g_ExtMAPeriod;
+              }
+            break;
+         case MODE_LWMA:
+           {
+            double lwma_sum=0, weight_sum=0;
+            for(int j=0; j<g_ExtMAPeriod; j++)
+              {
+               int weight=g_ExtMAPeriod-j;
+               lwma_sum+=BufferCCI[i-j]*weight;
+               weight_sum+=weight;
+              }
+            if(weight_sum>0)
+               BufferSignal[i]=lwma_sum/weight_sum;
+           }
+         break;
+         default: // MODE_SMA
+           {
+            double sum=0;
+            for(int j=0; j<g_ExtMAPeriod; j++)
+               sum+=BufferCCI[i-j];
+            BufferSignal[i] = sum/g_ExtMAPeriod;
+           }
+         break;
+        }
+     }
+
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+