<?xml version="1.0" encoding="utf-8"?>
<form>
    <fieldset name="general">
        <field name="operator" type="comparator"/>
        <field name="value" type="nrcomponents" 
            label="NR_ASSIGN_COMPONENTS"
            description="NR_ASSIGN_COMPONENTS_DESC"
            multiple="true" 
            frontend="true"
            class="hasChosen"
        />
    </fieldset>
</form>