use .strm file to link to tv episode bluray iso

found this method for adding episodes from a bluray iso to library https://nwgat.ninja/adding-episodes-on-t…i-library/ . essentially it suggests using s stream file to do it. following the instructions gave me this pointer:

udf://smb%3a%2f%2fTOWER%2fTV%2fdoctor%20who%20(2005)%2fseries%209%2fdoctor-who-s9d1.iso/BDMV/PLAYLIST/00032.mpls which I added to a .strm file . It did not work.

The difference I can see is that I am using an unraid nas , while the instruction set was using a local drive.

How should I modify the string I have included above to allow for the location being on a remote server on the same network?
I admit to being a complete novice with this type of file. I saw this method as being a lot less work to scrape episodes than editing playlist files.