mydiscount.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
    JBZoo App is universal Joomla CCK, application for YooTheme Zoo component

    @package     jbzoo
    @version     2.x Pro
    @author      JBZoo App http://jbzoo.com
    @copyright   Copyright (C) JBZoo.com,  All rights reserved.
    @license     MIT
    @coder       Denis Smetannikov <denis@jbzoo.com>
-->
<element type="element" group="Core" hidden="false">
    <name>My Discount</name>
    <author>SmetDenis</author>
    <creationDate>2015</creationDate>
    <copyright>Copyright (C) JBZoo.com</copyright>
    <authorEmail>denis@jbzoo.com</authorEmail>
    <authorUrl>http://jbzoo.com</authorUrl>
    <version>1.0</version>
    <description>Simple example</description>

    <params>
        <param name="rate" type="text" default="-10%" label="Discount"/>
        <param name="limit" type="text" default="10000" label="Limit"/>
    </params>

</element>