XnView Software

Yes, user friendly interface is always must be in priority.
As example here (on screenshots) is "Videos" group with "Subfolder" field, just do it like there and write "mask" there, it's will be intuitively and clear.
In total, I may close bug and make a suggestion?

As a programmer I would preferred this topic be a suggestion and implemented, this is simple.

Yes its work, but not how I wanted
There is now two ways for this topic,
- its is bug and hint is not correct,
- its not bug, but suggestion and need add subfolders creation, and hint is confusing.

XnView MP Windows
Version 0.99.7 64bits (Jan 13 2022)
Libformat version 7.100

Here is error like.

It doesnt work.
May be not enough "mkdir" command programatically, because hint say it subfolders must work in filename.
I think its a bug.

Hello. Great app.
When I using "Import and sort" feature and choosing "New filename" with this value "{Folder name}\{EXIF:Date Taken [Y-m-d H-M-S]}"
then get error "Cannot open destination file". All rights have.
If I create folder myself then where is no error.