Use a dash or a space as the separator. It should work in many different ways:
1x01-02, 1x01 02, 1x01-1x02, s01e01-02, etc.
Just look in the configuration interface under Import Settings > Parsing Expressions
United Kingdom
Type: Simple
<series> - <season>x<episode> - <title>.<ext>
Type: Simple
\<series>\Season <season>\Episode <episode> - <title>.<ext>
Type: Regexp
(?<series>[^\\\[]*) - \[(?<season>[0-9]{1,2})x(?<episode>[0-9\W]+)\](( |)(-( |)|))(?<title>[^$]*?)\.(?<ext>[^.]*)
Type: Regexp
(?<series>[^\\$]*) - season (?<season>[0-9]{1,2}) - (?<title>[^$]*?)\.(?<ext>[^.]*)
Type: Regexp
^(?<series>[^\\$]+)\\[^\\$]*?(?:s(?<season>[0-1]?\d)e(?<episode>\d\d)|(?<season>(?:[0-1]\d|(?<!\d)\d))x?(?<episode>\d\d))(?!\d)(?:[ .-]?(?:(?<episode2>\d\d(?!\d))|E(?<episode2>\d\d)|(?:\d\d|(?<!\d)\d)x?(?<episode2>\d{2}(?!\d)))|)[ -.]*(?<title>[^\\]*?(?<HR>HR\.)?[^\\]*?)\.(?<ext>[^.]*)$
Type: Regexp
^.*?\\?(?<series>[^\\$]+?)(?:s(?<season>[0-1]?\d)e(?<episode>\d\d)|(?<season>(?:[0-1]\d|(?<!\d)\d))x?(?<episode>\d\d))(?!\d)(?:[ .-]?(?:(?<episode2>\d\d(?!\d))|E(?<episode2>\d\d)|(?:\d\d|(?<!\d)\d)x?(?<episode2>\d{2}(?!\d)))|)[ -.]*(?<title>[^\\]*?(?<HR>HR\.)?[^\\]*?)\.(?<ext>[^.]*)$
Type: Regexp
^.*?\\?(?<series>[^\\$]+?)(?:s(?<season>[0-1]?\d)e(?<episode>\d\d)|(?<season>(?:[0-1]\d|(?<!\d)\d))x?(?<episode>\d\d))(?!\d)(?:[ .-]?(?:(?<episode2>\d\d(?!\d))|E(?<episode2>\d\d)|(?:\d\d|(?<!\d)\d)x?(?<episode2>\d{2}(?!\d)))|)[ -.]*(?<title>[^\\]*?(?<HR>HR\.)?[^\\]*?)\.(?<ext>[^.]*)$
^.*?\\?(?<series>[^\\$]+?)(?:s(?<season>[0-1]?\d)e(?<episode>\d\d)|(?<season>(?:[0-1]\d|(?<!\d)\d))x?(?<episode>\d\d))(?!\d)(?:[ .-]?(?:(?<episode2>\d\d(?!\d))|E(?<episode2>\d\d)|(?:\d\d|(?<!\d)\d)x?(?<episode2>\d{2}(?!\d)))|)[ -.]*(?<title>[^\\]*?(?<HR>HR\.)?[^\\]*?)\.(?<ext>[^.]*)$
Sweden