Backtesting strategy data using Ninjascript

Hey guys. I've been trading for a couple of years now, and I'm brand new to coding. I do mostly swing trading. The majority of my trades are 1 day systems meaning that I enter the day prior and I exit on the current day. (IE: enter at previous day's low (low[1]) and exit at the current day close (close[1])) I have a strategy I would like to backtest. I would like to include the strategy entry and exit on the exported backtesting file. From what I understand. This is not possible with ATM (it only allows for live data). How can I make this happen?