Couldn't load dynamic text into a movieclip

Trying to write a script that load dynamic text from a .txt file.

Everything works fine until i tried to put the dynamic text inside a movieclip. There is a error generated which i dont understand.

Really appreciated if someone can advice me on my mistake. Thanks.

Below is my code,

var myLoader:URLLoader = new URLLoader();
myLoader.dataFormat=URLLoaderDataFormat.VARIABLES;
myLoader.load(new URLRequest(“data.txt”));
myLoader.addEventListener(Event.COMPLETE, loadData);

function loadData(e:Event){
for (var i:uint=0; i<myLoader.data.cant; i++) {
this[“menuButton”+i+"_mc"].buttonName_txt.text=myLoader.data[“Coments”+i];
}
}

Below is the error generated,
A term is undefined and has no properties.