Update Menu on modx.tree.Tree extent

SCC.tree.categories = function(config){
    config = config || {};
    Ext.applyIf(config,{
		url: SCC.config.connectorUrl
		,action: 'categories/getNodes'
		,expandFirst: true
		,rootId: '0'
		,rootName: 'Top categories'
		,rootVisible: true
		,sortAction: 'categories/nodesUpdate'
	});
    SCC.tree.categories.superclass.constructor.call(this,config);
};
Ext.extend(SCC.tree.categories,MODx.tree.Tree,{
	,getMenu: function(n,e) {
        var m = [];
        m.push({
            text: _('SCC.categories.update')
            ,handler: this.updateCategory
        });
...
...
        
	,updateCategory: function(btn,e) {
	    if (!this.updateSCCWindow) {
    	    this.updateSCCWindow = MODx.load({
        	    xtype: 'scc-window-category-update'
            	,record: this.record
                ,listeners: {
    	            'success': {fn:this.refresh,scope:this}
        	    }
	        });
    	} else {
	        this.updateSCCWindow.setValues(this.menu.record);
    	}
	    this.updateSCCWindow.show(e.target);
	}

,record: this.record

this.cm.activeNode.attributes