[user743]

can you tell me the regex to save the filename in to a costom column called "filename".

edit
apparently that's not a option so how do i save it as series.
the file names look like this: with different 5 digit and "part" numbers.

f_01234
f_01567_all
f_01567_part_1
f_01567_part_23

thanks kovldgoyil for calibre and all your help!