I am hoping you can help fix my code. I am trying to code a MT4 indicator to indicate a powerful downward bar.

No matter what I do, I still get :1 errors, 1 warnings

OnCalculate function declared with wrong type or/and parameters line 42 column6

OnCalculate function not found in custom indicator line 1 column 1

Any suggestions?

Thanks!!!

#property strict

// Define indicator buffers
#property indicator_chart_window
#property indicator_buffers 3
#property indicator_color1 Blue
#property indicator_color2 Red
#property indicator_color3 Lime

// Define indicator labels
#property indicator_label1 "Doji"
#property indicator_label2 "Exhaustion"
#property indicator_label3 "Engulfing"

// Declare indicator buffers
double DojiBuffer[];
double ExhaustionBuffer[];
double EngulfingBuffer[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
   // Set buffer arrays
   SetIndexBuffer(0, DojiBuffer);
   SetIndexBuffer(1, ExhaustionBuffer);
   SetIndexBuffer(2, EngulfingBuffer);
   
   return(INIT_SUCCEEDED);
  }

//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
void 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 int &spread[])
  {
   int i;
   for(i = prev_calculated; i < rates_total; i++)
     {
      // Calculate candle range
      double candle_range = high[i] - low[i];

      // Calculate upper shadow length
      double upper_shadow = high[i] - MathMax(open[i], close[i]);

      // Calculate lower shadow length
      double lower_shadow = MathMin(open[i], close[i]) - low[i];

      // Check for Doji candle condition
      if (candle_range > 0 && upper_shadow < 0.05 * candle_range && lower_shadow < 0.05 * candle_range) {
          DojiBuffer[i] = low[i];
      } else {
          DojiBuffer[i] = EMPTY_VALUE;
      }
      
      // Check for Exhaustion candle condition
      if (i > 0 && candle_range > 2 * MathAbs(close[i] - close[i - 1]) && upper_shadow < 0.15 * candle_range && lower_shadow < 0.15 * candle_range) {
          ExhaustionBuffer[i] = low[i];
      } else {
          ExhaustionBuffer[i] = EMPTY_VALUE;
      }
      
      // Check for Engulfing candle condition
      if (i > 0 && close[i] > open[i] && open[i - 1] > close[i - 1] && close[i] > open[i - 1] && open[i] < close[i - 1] && (close[i] - open[i]) > 0.9 * (high[i] - low[i]) && (open[i - 1] - close[i - 1]) > 0.9 * (high[i - 1] - low[i - 1])) {
          EngulfingBuffer[i] = low[i];
      } else {
          EngulfingBuffer[i] = EMPTY_VALUE;
      }
     }
  }