Test of Prior day open and close

[set2win]

Hi,
trying to test for prior open and close of the previous day
config section
AddDataSeries(BarsPeriodType.Day, 1);

OnBarUpdate secion
if ( BarsinProgress ==1)
{
if ( Close[1] > Open[1]) PrevDayUp = 1; else PrevDayUp =0;
}

I've tried to search for another similar post but did not find.
This never fires even though many days the bool is true

My strategy needs to evaluate the previous open close each trading day
So for example testing Aug 16-Aug 20, I on the 16 iteration it would look at trading day Aug 13 and on 17th look at Aug 16 open/close etc..

[set2win]

I found something that appears to work:
if (sessionIterator == null)
sessionIterator = new Data.SessionIterator(BarsArray[0]);

// If the current data is not the same date as the current bar then its a new session
if (currentDate != sessionIterator.GetTradingDay(Time[0]) && CurrentBars[1]>=0)
{
// The current day OHLC values are now the prior days value so set
// them to their respect indicator series for plotting
priorDayOpen = BarsArray[1].GetOpen(BarsArray[1].GetBar(Times[0][1]));
priorDayHigh = BarsArray[1].GetHigh(BarsArray[1].GetBar(Times[0][1]));
priorDayLow = BarsArray[1].GetLow(BarsArray[1].GetBar(Times[0][1]));
priorDayClose = BarsArray[1].GetClose(BarsArray[1].GetBar(Times[0][1]));
currentDate = sessionIterator.GetTradingDay(Time[0]);

Hopefully it will work in real time as it does in historical.