Flash Adobe AIR - Overwrite Standard Command C KeyEquivalent?

I'm currently trying to built a little Air Application where I want to set the normal Command-C key to call a function? Is this even possible to use a standard Menu Command?

function createMenu():NativeMenu{
var menu:NativeMenu = new NativeMenu();
var menuOneCommand: NativeMenuItem = menu.addItem(new NativeMenuItem("Menu 1"));
menuOneCommand.keyEquivalent = "C"; //Command Shift C
menuOneCommand.addEventListener(Event.SELECT, myfunction);
return menu;
}

Moreover I would love to know how I can call a function (myfunction) which is actually a MouseEvent Handler?
function myfunction(e:MouseEvent = null) {
trace('Throws Errors at the moment')}