<?xml version="1.0" encoding="utf-8"?>
<form>
    <fieldset name="general">
        <field name="operator" type="comparator">
            <option value="returning">NR_VISITOR_IS_RETURNING</option>
            <option value="new">NR_VISITOR_IS_NEW</option>
		</field>
        <!-- Required so the condition can pass -->
        <field name="value" type="hidden" value="1" />
    </fieldset>
</form>