CICustom class for Zigzagcolor for multi timeframes and parameter

[Amin Ghiassi]

I need some advice to help me using sting type data in my zigzag class or structure.

I have problem with this error

'indname' - parameter conversion not allowed    indicatorclass_zigzag rev1.mq5    48    13

#property copyright "@min"
#include <indicators/indicators.mqh>
#include <indicators/Custom.mqh>
   double fracUP_MAC[];
   double fracDW_MAC[];
   int frac_MACR_Handle;
 
struct ZigzagSettings {
   
   ENUM_TIMEFRAMES tf;
   int Depth;
   int Deviation;
   int BackStep;
    
};
 
  
class MyZIGZAGs : public CIndicators {

public: 
      static string indname;
      ~MyZIGZAGs(void){}; 
   
    
   CiCustom* operator[](int i) { 
      return this.At(i); 
   }
   
   bool create(ZigzagSettings &settings[]) {
      
            
      for (int i=0; i<ArraySize(settings); i++) {
         CiCustom *zigzag = new CiCustom();
         
 
         
         bool create = zigzag.Create(
            _Symbol, 
            settings[i].tf,
            IND_CUSTOM,
            4,
            indname,   
            settings[i].Depth,
            settings[i].Deviation,
            settings[i].BackStep
                       
         );
         if (!create || !this.Add(zigzag))
            return false;
      }
      return true; 
   }
};
string MyZIGZAGs:: indname={"Examples\\ZigzagColor"};

MyZIGZAGs g_zigzags;


//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
//---
  ArraySetAsSeries(fracUP_MAC,true);
  ArraySetAsSeries(fracDW_MAC,true);
 
      
   ZigzagSettings settings[] = {
      {PERIOD_M1, 12, 5, 3}, 
      {PERIOD_M3, 20, 5, 3}
      };
   
   
   g_zigzags.Clear();
   if (!g_zigzags.create(settings))
      return INIT_FAILED;
      
   
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---
   
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//---
  for (int i=0; i<g_zigzags.Total(); i++) {
      CiCustom *zigzag = g_zigzags[i];
      frac_MACR_Handle = zigzag.Handle();
      CopyBuffer(frac_MACR_Handle,0,3,1000,fracUP_MAC);
      CopyBuffer(frac_MACR_Handle,1,3,1000,fracDW_MAC);
      
   } 
  }
//+------------------------------------------------------------------+