Hi, I use accordion menu, when I click it open the grid inside a tabpanel.

How I can set a custom css class to the menu to the activated tab, and change it when I change the to other tab.

my actual code is

region: 'center',
xtype: 'tabpanel',
reference: 'tabPanelCenter',
listeners: {
tabchange: 'changeTab'


changeTab: function(tabPanel, newCard) {
//Here I want to change the submenu css class

Best regards