i am trying to build an indicator

 
//+------------------------------------------------------------------+
//|                                             Target Fetcher.mq4  |
//|                        Copyright 2023, MetaQuotes Software Corp. |
//|                                             https://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright 2023, MetaQuotes Software Corp."
#property link      "https://www.metaquotes.net"
#property version   "1.00"
#property strict
#property indicator_chart_window
// Input parameters
input string URL = "https://janicekelly.com/dash";
input color LabelColor = clrWhite;
input int LabelSize = 12;
input int Corner = 1; // 0=Top-left, 1=Top-right, 2=Bottom-left, 3=Bottom-right
input int XDistance = 10;
input int YDistance = 10;
// Global variables
string objName = "TargetLabel";
int updateInterval = 60; // Update every 60 seconds
datetime lastUpdateTime = 0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
{
   // Create the label object
   if(!ObjectCreate(0, objName, OBJ_LABEL, 0, 0, 0))
   {
      Print("Error creating label: ", GetLastError());
      return(INIT_FAILED);
   }
   
   // Set label properties
   ObjectSetInteger(0, objName, OBJPROP_CORNER, Corner);
   ObjectSetInteger(0, objName, OBJPROP_XDISTANCE, XDistance);
   ObjectSetInteger(0, objName, OBJPROP_YDISTANCE, YDistance);
   ObjectSetString(0, objName, OBJPROP_TEXT, "Fetching target...");
   ObjectSetInteger(0, objName, OBJPROP_COLOR, LabelColor);
   ObjectSetInteger(0, objName, OBJPROP_FONTSIZE, LabelSize);
   ObjectSetString(0, objName, OBJPROP_FONT, "Arial");
   
   // Force an update on initialization
   lastUpdateTime = 0;
   
   return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
   // Clean up
   ObjectDelete(0, objName);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration 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[])
{
   // Check if it's time to update
   datetime currentTime = TimeCurrent();
   if(currentTime - lastUpdateTime >= updateInterval)
   {
      // Update the target value
      UpdateTargetValue();
      lastUpdateTime = currentTime;
   }
   
   return(rates_total);
}
//+------------------------------------------------------------------+
//| Update target value from website                                  |
//+------------------------------------------------------------------+
void UpdateTargetValue()
{
   string headers;
   string data;
   char result[];
   char result_headers[];
   
   // Reset last error
   ResetLastError();
   
   // Make the web request
   int timeout = 5000; // 5 seconds timeout
   int res = WebRequest("GET", URL, "", timeout, data, result, result_headers);
   
   if(res == 200)
   {
      // Convert result to string
      string response = CharArrayToString(result);
      
      // Extract the target value
      string targetValue = ExtractTargetValue(response);
      
      // Update the label
      if(targetValue != "")
      {
         ObjectSetString(0, objName, OBJPROP_TEXT, "Target: " + targetValue);
         Print("Target updated: ", targetValue);
      }
      else
      {
         ObjectSetString(0, objName, OBJPROP_TEXT, "Target: Not found");
         Print("Could not extract target value from response");
      }
   }
   else
   {
      ObjectSetString(0, objName, OBJPROP_TEXT, "Error: " + IntegerToString(res));
      Print("WebRequest failed with error: ", GetLastError(), " HTTP code: ", res);
   }
}
//+------------------------------------------------------------------+
//| Extract target value from response text                           |
//+------------------------------------------------------------------+
string ExtractTargetValue(const string& response)
{
   // Look for the line containing "target:"
   string lines[];
   StringSplit(response, '\n', lines);
   
   for(int i = 0; i < ArraySize(lines); i++)
   {
      string line = lines[i];
      StringTrimLeft(line);
      StringTrimRight(line);
      
      // Check if this line contains "target:"
      if(StringFind(line, "target:", 0) == 0)
      {
         // Extract the value after "target:"
         string parts[];
         StringSplit(line, ':', parts);
         
         if(ArraySize(parts) >= 2)
         {
            StringTrimLeft(parts[1]);
            StringTrimRight(parts[1]);
            return parts[1];
         }
      }
   }
   
   return ""; // Not found
}
 
//+------------------------------------------------------------------+