Platforms that allow custom entry/exit signals.

Hey guys! Been trading futures for a little over 10 years. I've recently started writing my own scripts on Tradingview and I've been using TOS for my charts and livetrading.

When I run backtesting for my strategies on TV, I notice that the list of trades on the "Strategy Tester" tab lists that all of the entry and exit signals are posted on the "open" of the prospective bars. I would like my entry and exit signals to be at different price entry points. (ie: entering at the prrevious day's 'low', and exiting at the current bar at the 'close'). I've noticed that this cannot be achieved via coding on Pinescript. This is just a tweak that I'm trying to test to see if it yields profitable results. I would also like to be able to export this data (possibly including OHLC on prospective bars) onto Excel.