(error) read in log file

"Error: The expression could not be evaluated: File error “class FileIOError” on “C:\Program Files (x86)\BigFix Enterprise\BES Client__BESData__Global\Logs\20180320.log”: Windows Error 0x20: The process cannot access the file because it is being used by another " this word after evaluate from my code , I want to read line of file at current day
my code: ****nes of file whose(modification time of it = (maximum of modification times of files of folder “C:\Program Files (x86)\BigFix Enterprise\BES Client__BESData__Global\Logs”)) **
of folder "C:\Program Files (x86)\BigFix Enterprise\BES Client__BESData__Global\Logs"
what should i do???
thank you bro :grin:

A solution has been posted in your other forum post, Property file string of file is not defined