[Boost-users] How to setup log directory in an directory that is not fixed?

Hi, I am using boost.Log. I config the log using a logconfig.ini file. Now the requirement changed, we need to put the log in an directory specific to a login account. The account may change so we have to first create the directory then set the log output file to this directory. I tried to first log the logconfig.ini and then set the logging::add_file_log(...), but the file path set in the .ini files created too. If I don't setup the FileName in the .ini file, it throws a exception. Is there anyway to set the path and the file name separately? Or change the file path after loading the .ini config file? Thanks