1. Get trade history files (.csv) and put it in ..\MQL5\File folder and save the name of file (.csv).
2. For time differences of broker's terminals, use the same broker's meta trader 5 to get the best results.
3. Run the expert adviser on each charts and put the name of the file (filename.csv) in input field of expert adviser. 
4. For buy signals, blue arrows and trend lines are used. For sell signals, red arrows and trend lines are used. 
5. Remove the expert, and all the objects (arrows and trend lines) are gone. 
6. This EA was tested on forex and gold charts.