Hi Joseph,

This works for me in 2.4 and 2.5, what version of Totara are you using?

If I have text or textarea type user profile custom fields, and enter data as the multilang filter expects

http://docs.moodle.org/20/en/Multi-language_content_filter

i.e.

<span lang="en" class="multilang">english text</span><span lang="nl" class="multilang">Dutch text</span>

Then if I add that column and filter to a report in reportbuilder, the value of the field is displayed in whatever the language of the user viewing the report is.

Could you provide more information on how you have set up the profile fields, and the report?