AS 3 Convert button event to key enter event

Question

I'm learning how to use regular expressions in ActionScript
3, and can get an input to be tested by regular expressions, and an
answer delivered, if a button is clicked after text is entered.
But darn if I can figure how to code it so they just click
the enter key after typing what they like. In the following code
punk is a button, and there are two text fields, buzzo the input,
and tester the answer to the input. The array questo contains the
regular expressions, the array anso contains the responses.
I need code to replace the bottom line with a line that
relates to key enter being typed. Thanks for any ideas.
Sally

Answer 1

This will work if the code is on the timeline:
var quest0:RegExp = /i was/i
var quest1:RegExp =/\bbud(dy)?|mate/i
var quest2:RegExp =/how old|\bage\b/i
for(i=0;i<3;i++){
questo.push(this["quest"+i])
trace(questo[1])
Another method might be to add your RegExp objects to a
Object, and then
iterate the Object's properties and add the RegExp objects to
your array:
import flash.utils.getQualifiedClassName;
var RegExpContainer:Object = new Object();
RegExpContainer.quest0:RegExp = /i was/i;
RegExpContainer.quest1:RegExp =/\bbud(dy)?|mate/i;
RegExpContainer.quest2:RegExp =/how old|\bage\b/i;
for(var p in RegExpContainer){
var o = RegExpContainer[p];
if (getQualifiedClassName(o) == "RegExp"){
questo.push(o);