How to identify the click of multiple buttons with different tags?

I’m using CCB to create a scene. There are 3 buttons (menu items) with different tag value in these scene. All 3 buttons share the same Selector. Is it possible to identify them in callback. My function is similar to this:

MainScene.prototype.onPressButton = function() {
}

How to get the tag of the currently clicked button? Thanks

I am also having the same problem, Did anyOne have a work around about it?
@bagusflyer what did you do to solve it? please Help