Плагин с несколькими полями

// assets/components/minishop2/plugins/color/msproductdata.js
miniShop2.plugin.color = {
	getFields: function(config) {
		return {
			color: {xtype: 'minishop2-combo-options', description: '<b>[[+color]]</b><br />'+_('ms2_product_color_help')}
			color_img: {xtype: 'minishop2-combo-options', description: '<b>[[+color]]</b><br />'+_('ms2_product_color_img_help')}
			color_price: {xtype: 'minishop2-combo-options', description: '<b>[[+color]]</b><br />'+_('ms2_product_color_price_help')}
			
		}
	}
	,getColumns: function() {
		return {
			color: {width:50, sortable:false, editor: {xtype:'minishop2-combo-options', name: 'color'}}
			color_img: {width:50, sortable:false, editor: {xtype:'minishop2-combo-options', name: 'color_img'}}
			color_price: {width:50, sortable:false, editor: {xtype:'minishop2-combo-options', name: 'color_price'}}
		}
	}
};

<?php
// core/components/minishop2/plugins/color/msproductdata.map.inc.php

return array(
	'fields' => array(
		'color' => NULL,
		'color-img' => NULL,
		'color-price' => NULL,

	)
	,'fieldMeta' => array(
		'color' => array(
			'dbtype' => 'varchar'
			,'precision' => '255'
			,'phptype' => 'string'
			,'null' => true
			,'default' => NULL
		),
		'color-img' => array(
			'dbtype' => 'varchar'
			,'precision' => '255'
			,'phptype' => 'string'
			,'null' => true
			,'default' => NULL
		),
		'color-price' => array(
			'dbtype' => 'varchar'
			,'precision' => '255'
			,'phptype' => 'string'
			,'null' => true
			,'default' => NULL
		)
	)
	,'indexes' => array(
		'color' => array (
			'alias' => 'color'
			,'primary' => false
			,'unique' => false
			,'type' => 'BTREE'
			,'columns' => array (
				'action' => array (
					'length' => ''
					,'collation' => 'A'
					,'null' => false
				)
			)
		),
		'color-img' => array (
			'alias' => 'color'
			,'primary' => false
			,'unique' => false
			,'type' => 'BTREE'
			,'columns' => array (
				'action' => array (
					'length' => ''
					,'collation' => 'A'
					,'null' => false
				)
			)
		),
		'color-price' => array (
			'alias' => 'color'
			,'primary' => false
			,'unique' => false
			,'type' => 'BTREE'
			,'columns' => array (
				'action' => array (
					'length' => ''
					,'collation' => 'A'
					,'null' => false
				)
			)
		)
	)
);

<?php /* Index file for miniShop2 plugin */
return array(
            'xpdo_meta_map' => array(
                        'msProductData' => require_once dirname(__FILE__) .'/msproductdata.map.inc.php'
            )
            ,'manager' => array(
                        'msProductData' => MODX_ASSETS_URL . 'components/minishop2/plugins/color/msproductdata.js'
            )
);