Need help with a typewriter text effect

Question

Hi, could you guys look over my script and see what's up? I'd like the words in the string to type out in the alotted time, but for some reason my function apends the first and last letter of anything in the string, so "Hello?" becomes "ello." This is not affected if I pad the text in the string with spaces, i.e. " Hello? " Nor does this work if I start count i at -1, not 0. Please help.
import flash.utils.Timer;
import flash.events.TimerEvent;
var str:String = "Hello?";
var i:int = -1;
var delay:int = 720%str.length;
var timer:Timer = new Timer(delay);
timer.start();
timer.addEventListener(TimerEvent.TIMER,gotime);
function gotime(e:TimerEvent)
textbox_txt.appendText(str.charAt(i));
i++;
if (i>=str.length)
timer.stop();

Answer 1

AHA!  If forgot to go into the properties of my textfield and tell the ebedded font to have a character range of "All."
Thanks for getting my brain going Ned!
-Ab Infinito