How to translate content in user profile meta fields?

Hi,

I'm using MB User Meta along with WPML for a bilingual website. I'm having trouble figuring out how to translate the content of custom user profile fields.

Right now, I see that users can translate custom field content in other post types. However, with custom fields in the user profile, no such option is given.

I see that WPML has a hacky solution to this, with the limitation that such strings will only be accessible in the "String Translation" menu, and not in the usual WPML meta-box interface.

So the question: How can I have User profile custom fields be translatable, just like custom fields in "regular" post types?

Thank you for such an excellent extension!