finish-callback not found

[manuelsfd]

I see the other problems about the finish-callback and my question, someone could solve the problem? please!

<timer countdown="90" interval="1000" finish-callback="callbackTimer.finished()">{{minutes}} minutes, {{seconds}} seconds. </timer>

not found...
$scope.finished = function(){
console.log("hello");
}

not found...
$scope.callbackTimer.finished = function(){
console.log("hello");
}