<?xml version="1.0" encoding="UTF-8"?> <form> <fieldset name="basic"> <field name="gap" type="nrnumber" label="COM_CONVERTFORMS_FIELD_EMPTY_SPACE_GAP" description="COM_CONVERTFORMS_FIELD_EMPTY_SPACE_GAP_DESC" addon="px" min="0" default="20" /> </fieldset> </form>