Custom sort for albums

[escapereality]

I'm trying to sort the albums in the album list by date added to library. To achieve this, I created a custom ID3 tag to all my music, TXX:ADDED, which contains the raw file creation date. The format is number of seconds since epoch (i.e. 1523545412).

To sort the album view in Minimserver, I've set up:

Code:

itemTags: ADDED
tagValue: Album.value.sort={ADDED}

This unfortunately doesn't work.

The log is also full of warnings like:

Code:

Warning: Ignoring conflicting custom value for ALBUM tag 'Be With You' in file DJ Aligator/Be With You/03. DJ Aligator Feat. Sarah West - Be With You (Steffwell And Freisig Remix).mp3
applied sort value is '1523543879'; conflicting sort value is '1523498877'

I could use some assistance on this. Thanks in advance!