Actionscript 3.0 Popup - actionscript-3

Question

I'm trying to get a popup message to display for 1 second when the right answer is selected. All this pop up says is "Right Answer". I have made a function that makes the popup visible and I have put setTimeout in an if state (this if statement is if the right answer is selected). My code below and I would appreciate any help at all!
This is my function for the display
//------Popup--------//
right_ans.alpha = 0; //set to zero so message wont be displayed throughout game
//--------Popup function-------//
function DisplayAnswer(event:MouseEvent):void{
right_ans.alpha = 5;
}
This is the if statement with the setTimeout
if(event.target == pig) //object
{
currentQuestion++;
score = score + 5;
Score_txt.text = (score).toString();
setTimeout(DisplayAnswer, 1000);
}

Answer 1

Set alpha to 1, not 5. It accepts values from 0 to 1, being 0% to 100% opacity.

Answer 2

try this :
if(event.target == pig) //object
{
currentQuestion++;
score = score + 5;
Score_txt.text = (score).toString();
setTimeout(DisplayAnswer, 1000);
}
//------Popup--------//
right_ans.alpha = 0; //set to zero so message wont be displayed throughout game
//--------Popup function-------//
function DisplayAnswer():void{
right_ans.alpha = 0.5;
setTimeout(removeAnswer, 1000);
}
function removeAnswer():void{
right_ans.alpha = 0.0;
}