iMAOnArray converting volume trouble?

[Stephen Reynolds]

In the following code why does it return my object AVGVol1 as 0.0 and not the average of volume it should?

I see AVGVol[0] works and returns the volume okay, so this array work as far as I see‌. But it doesn't work within the iMAOnArray parameter? Why not? Any help on this I would be much appreciated.

‌

void OnTick()
{
   double AVGVol[1];
   AVGVol[0] = (double)iVolume(_Symbol,_Period,1);      
   //double avgvol = (double)Volume[0];
                          
   double AVGVol1 = iMAOnArray(AVGVol,1,5,1,MODE_SMA,1);
   double AVGVol2 = iMAOnArray(AVGVol,1,5,1,MODE_SMA,2);
        
   bool risingvol = (AVGVol1 > AVGVol2);

   Print(AVGVol1);
}

‌

[William Roeder]

1. Why did you posted in the Root / MT5 General section instead of the MQL4 section?
   
2. How do you compute a five (5) period moving average with only one value?
   
3. And how do you expect to look at the last two values with only one value.