AS3 Is there a simple way of creating this array?

AS3 Is there a simple way of creating this array?

I'll have some task for the user to do, so I'll make an Array(false,
false, false, ... number of tasks) and each element will become true when
completed, so I'll know when all will be completed and witch one is still
incomplete. Usually I create an int to count the tasks when created, and
that decrease, but I need to control each item this time (you didn't
complete this one...), not only the global progress.
So, I got only the number of tasks:
var Ctrl:Array = new Array();
for(var i=0; i<numberOfTasks; i++){ Ctrl.push(false); }
If I have a lot of tasks, this way may take a while freezing the
execution. Is there some "automatic" way?