i tried to do what you suggested doing in the calibre manual in order to be able to update my translations, it's not working

i have a deadline to finish my project by the end of this weekend, i did all the research and made an instance of calibre, but i modified some translation to the msgstr: that wasn't accurate but the new updates didn't appear, after running calibre from the command line where the .po file exists, please it's my first job, i need to make some good impression hihi anyone can help ? bytheway i'm thankful for this great professional system you made guys

god bless you all