when I'm backtest in 15M Timeframe

[roi]

how the backtester know if the price went up first or down?

does it take the 1M data and check this from there?

Thanks.

[gordon]

roi:

how the backtester know if the price went up first or down?

The algorithm for Tick's generation in MT4 should be similar to the one described here for MT5.

does it take the 1M data [...]

Yes, if u use 'Every tick' and if M1 history is available for the chosen symbol/period.

[zzuegg]

https://www.mql5.com/en/search is your friend.

http://google.com is also a good friend.

https://www.mql5.com/en/articles/1511 is the answer.

[roi]

THANKS ALL.... :)

[zzuegg]

gordon:

The algorithm for Tick's generation in MT4 should be similar to the one described here for MT5.

Yes, if u use 'Every tick' and if M1 history is available for the chosen symbol/period.

interesting, could be easy adopted to make a wonderful EA, at least in the tester ;)