Hi just want ask and clarify somethings in terms of opening a file. Since both the master and slave are opening the same file which is the Tradecopy.csv, there would be a chance that both EA could open the file at the same time which could cause some errors since writing and reading into a file can't be done on the same time. And from what I've seen on the code it'll just print out the error and it'll go back to the start continuing the loop. Is there a better way to check on a file if there are records or modifications which happens on that file without using for loop again and again?