How to use CopyTicksRange() on Backtesting?

 

Hi guys, I'm developing a Expert Advisor based, partially, on the volume of BUY and SELL deals for the last minutes, to identify price trends. Unfortunately I'm not being able to perform back testing since CopyTicksRange() do not provide the flag field with value of TICK_FLAG_BID and/or TICK_FLAG_ASK. My understanding is that It works only on Realtime Operations. I'm right? Any help would be welcome! Thanks.

Reason: