thanks for the bug report yaomon17. Will get to it as soon as I can. Apparently, it doesn't work for the starting animation, unless you manually add an action to start an animation by name.
so, if the starting animation by default is "idle"
-on "idle" finished
unless you actually add the 'set animation to "idle"' action. let me know if that works for you, and I'll put a fix so it works with the default starting animation soon.