QuickBMS - exporting and importing into PACK file in unreal engine

[boxolop]

hello guys, i need help with quickbms.
i have a game that contain PACK files. Game is made in Unreal Engine4. So, i get Unreal Tournament script for Quickbms and a key for a game. I export (unpack) that PACK files so i get a lot of files.
I changed what i want and now, i dont know how to import (pack) that changed files back into PACK file. Still giving me error so im doing it bad.
Can somebody give me tutorial how can i do it?
Thanks a lot