How to programmatically fire the check change event of a ExtJS 4.1 checkbox tree panel

Question

I have a ExtJs 4.1 check box tree panel. When I check or uncheck any node, check change event for the tree is fired. How can I programmatically fire this event.

One way I can think of is to use following code. But this code is not firing every time :-(

this.fireEvent('checkchange', node, true, opts);

Thank you

Answer 1

try with this event

checkchange(node, checked, eOpts)