Toggle tree node checkbox click without firing checkchange event

I want to set a tree node checkboxto true without firing the "checkchange" event. How can I do that.

i tried below

Code:

node.parentNode.ui.checkbox.setAttribute("checked", "checked");

but it doesn't work.

if I do the toggle, it will fire the "checkchange" event

Code:

node.parentNode.getUI().toggleCheck(true);

Toggle tree node checkbox click without firing checkchange event