BuddyPress.org

Depending on where you’re trying to display this info, you may need to use

xprofile_get_field_data( $field, $user_id = 0, $multi_format = 'array' )

For example:

$user_id = 1;
$filemakerID = xprofile_get_field_data( 'Fonds', $user_id, $multi_format = 'comma' );
echo $filemakerID;