cBot Robot_Forex & Start Order with EMA

Hi all,
with reference to this CBOT:

/algos/cbots/show/225

at line 257 there is this code:

private int GetStdIlanSignal ()
{
int Result = -1;
LastBarIndex MarketSeries.Close.Count int = - 2;
PrevBarIndex LastBarIndex int = - 1;

if (MarketSeries.Close [LastBarIndex]> MarketSeries.Open [LastBarIndex])
if (MarketSeries.Close [PrevBarIndex]> MarketSeries.Open [PrevBarIndex])
Result = 0;
if (MarketSeries.Close [LastBarIndex] <MarketSeries.Open [LastBarIndex])
if (MarketSeries.Close [PrevBarIndex] <MarketSeries.Open [PrevBarIndex])
Result = 1;
return Result;
}

which returns the signal to the line 89 to start the first order.

I would like to modify the code so that the signal is generated by comparing the to EMA20 the price.

I tried but I failed.
How can you make?

Thanks