Text typewriter effect wont work in DW

Its me again

Im using this AS code to have a typwriter effect. it works fine on flashplayer but when i put the flash file in Dreamweaver it plays the movie ok but does not show the text. Heres the code wood someone be kind enough to see whats wrong with it.

this.texto = “hola, que tal hermosa?”;
this.letraIndex = 0;
this.letras_array = [];
this.typeID = setInterval(this, “escribe”, 100);
this.escribe = function(){
var letraAEscribir = this.texto.charAt(this.letraIndex);
//var textoAEscribir = myString.concat(this.letras_array);
this.textBox.text += letraAEscribir;