I don't know if this is simply a typo in the email or not, but I see two different capitalizations of the B.
callBackFunction callbackFunction - Josh On Feb 6, 2017 11:35 PM, "Justin Mclean" <jus...@classsoftware.com> wrote: Hi, This code: public function initialise():void { panel.callback = callbackFunction; } public function callBackFunction():void { //TODO code goes here } Gives this error when the initialise function is called: Uncaught ReferenceError: callbackFunction is not defined Changing it to this (pun intended) makes it work. Why is “this" needed? public function initialise():void { panel.callback = this.callbackFunction; } Thanks, Justin