<?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>