Simple MQL4 Indicator to Boolean Variable Conversion

I have gotten an indicator called RVOL, which measures the relative volume of a symbol against the past days of trading.

This is currently an indicator format.

What I need is this converted into a bool / double that reflects the same value shown in the indicator.

To understand further.

1) Watch the video provided (zip file)

2) Have a look at the code

3) Have a read of the rest of the description.

Note: I need developers who are able to deliver on time so please only apply if you can complete this task

This the main indicator section of code:

void CalculateRelVolume(const int startBar, const int rates_total, const long& volume[])
{

   vol[startBar] = (double)volume[startBar];

   int i = startBar;
   if (i >= rates_total) i = rates_total - 1;
   for (; i > 0 && !IsStopped(); i--)
   {
         double curr_volume = (double)volume[i];
         double mean_volume = 0.0;         
         
                        for(int j = 1; j <= AveragingDays; j++) 
                        mean_volume += (double)volume[i + (j * BarsIn24Hours)]; 
         
                        mean_volume /= (double)AveragingDays;
         
                        //N.B. Value of 1.0 represents current vol is equal to average volume, 0.0-1.0 is below average, >1.0 is above average
         if(mean_volume>0)
                        vol[i] = curr_volume / mean_volume;            
         if(vol[i] > indicator_level1) volHigh[i] = vol[i];         //If current vol higher than average     
         else if (vol[i] > indicator_level2) volMedium[i] = vol[i];   //If current vol lower than average     
         else volLow[i] = vol[i];
   }
}

Note there are more parts to this indicator. But simple answer is vol[i] is the value that needs to be fetched.

This is my first attempt: (Note I do not want to have to fetch iCustom)

bool RVOL1(string symb1)
{
double RVOL = iCustom(symb1, PERIOD_M1,"RVOL", 5, 3, 1);

double RVOL_MAX = 1.0;

   if(RVOL < RVOL_MAX)
   return true;

   else
   {
   return false;
   }
   
   return false;
}

This is my second attempt at it:

   bool isVolumeBelowAverage(string symb) {
    
    bool state = false;
    int averagingDays = 5;
    
    int rates_total = Bars(symb, PERIOD_M1);
    int barsIn24Hours = 0;

    datetime prevDateTime = iTime(symb, PERIOD_M1, 0) - (86400 * 7);
    int numBarsIn7Days = iBarShift(symb, PERIOD_M1, prevDateTime, false);
    barsIn24Hours = numBarsIn7Days / 5;
    
    if (barsIn24Hours == 0) return false;
    
    double curr_volume = iVolume(symb, PERIOD_M1, 0);
    double mean_volume = 0.0;
    
    for (int j = 1; j <= averagingDays; j++) {
        mean_volume += iVolume(symb, PERIOD_M1, 0 + (j * barsIn24Hours));
    }
    
    mean_volume /= (double)averagingDays;
    double relVolume = 0.0;
    
    if (mean_volume > 0) {
        relVolume = curr_volume / mean_volume;
    }
    
    if(relVolume < 0.8)
    {
    state = true;
    }
    
    return(state) ;
}