function ee_infusionsoft_save_my_custom_questions( $is_contact_data, $ee_attendee ) {
    if( $ee_attendee instanceof EE_Attendee ) {
        //get the last answer this attendee provided to the question with admin label 'company'
        $company_answer = EEM_Answer::instance()->get_one( array( array( 'Registration.ATT_ID' => $ee_attendee->ID(), 'Question.QST_admin_label' => 'company-name' ) , 'order' => 'DESC' ) );
        if( $company_answer ){
            $is_contact_data[ 'Company' ] = $company_answer->pretty_value();
        }

        //get the last answer this attendee provided to the question wtih admin label 'course-materials'
        $course_materials_answer = EEM_Answer::instance()->get_one( array( array( 'Registration.ATT_ID' => $ee_attendee->ID(), 'Question.QST_admin_label' => 'course-materials' ) , 'order' => 'DESC' ) );
        if( $course_materials_answer ){
            $is_contact_data[ '_CourseMaterials' ] = $course_materials_answer->pretty_value();
        }
    }else{
        EE_Error::add_error(sprintf( __( 'ee_infusionsoft_save_my_custom_questions was not called with an EE_Attendee but a %s', 'event_espresso' ), gettype( $ee_attendee )), __FILE__, __FUNCTION__, __LINE__ );
    }
    return $is_contact_data;
}
add_filter( 'FHEE__EED_Infusionsoft__save_infusionsoft_attendee__extra_attendee_data', 'ee_infusionsoft_save_my_custom_questions', 10, 2 );