Help please, iCustom indicator buffers returning zero

[bdavies]

I have some fairly basic test code integrate with the indicator from the market. I am having huge problems getting any data back and would really appreciate any assistance anyone could provide...

The code just takes the first buffer and the second bar. I get no errors from the handle or result but the buffers are zero.

Hoping someone can just confirm if the code looks OK or have I missed something. Thanks.

int CS28;
double testBuffer[1];
datetime prevStrengthCalcM5;

int OnInit()
  {
//---

   CS28=iCustom(_Symbol,PERIOD_M5,"Market\\Advanced Currency Strength28 MT5","","",true,true,23);
   int error=GetLastError();
   Print("Handle error: "+IntegerToString(error));
   
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---
   
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//---

   if (prevStrengthCalcM5!=iTime("EURUSD",PERIOD_M5,0))
   {

      int result=CopyBuffer(CS28,0,1,1,testBuffer);
      if (result>=0)
      {
         Print("testBuffer: "+DoubleToString(testBuffer[0]));
         int error=GetLastError();
         Print("Error: "+IntegerToString(error));
         prevStrengthCalcM5=iTime("EURUSD",PERIOD_M5,0);
      }
   }
   
  }