Hi there,

Currently, it is not possible to achieve this as Easysocial are using its own field systems, that is using workflows, and only will sync with it(Joomla) default fields only, such as username, emails and etc.

But it would be best if you can submit a feature request regarding this issues by creating a new ticket on the forums and set it to "Feature Request", so everyone else could vote for it, the more people request on this, and we will priority consider it.

Thanks for your understanding.