Fix Ninjatrader 8 Indicator

I have a custom indicator for Ninjatrader 8 that needs to be fixed. Its a very simple issue and requires very little to fix. The indicator is a High/Low indicator that shows the highest & lowest price of the last few bars on a chart. The issue is that the indicator is showing the High & Low of the candle wicks, and not the bar closing price. I need the indicator to show the High & low of the bar closing prices. I need this fixed within 24 hours. Thanks