<?xml version="1.0" encoding="utf-8"?> <form> <fieldset name="general"> <fields name="params"> <field name="operator" type="comparator" label="NR_VISITOR_IS"> <option value="is">NR_ON_HOMEPAGE</option> <option value="is_not">NR_NOT_ON_HOMEPAGE</option> </field> </fields> </fieldset> </form>