Buddypress Xprofile get field data checkbox returns array

Hi

I am using the following to get a Buddypress members xprofile data displayed:

<?php echo xprofile_get_field_data( 'Specialist Sectors', get_the_author_id()) ?>

It works fine for xprofile fields that are free text, but the fields that are checkboxes, it simply returns ‘array’ to the front end.

Is there a way to include this so it works?

Thanks,

Ian