Tickstory

i have EA of zigzag ,and this EA give me the price of last array zigzag.. and when i put the EA directly in platform the EA show me the price normal.. and when i do backtest of platform show me also the price normal.. but when i use TickStory the EA give the value 0 can u explain why and what i shou...

i use mt4 with tickstory light free

but I have resultmodelling quality N/A

first what means N/A??

and also ..is it good modelling quality for back test??