Hi Vadim,
we tried in this method. in this package we are giving FTP server Path where Files are there and target we giving ROOT/Webfolders path. After running the package it showing FTP server is not available error .but FTP server is available is there any BASIS settings required to get that.
Note: BI BPC APP server is same , Through BI server I can Able to connect FTP server But BPC not able to connect.