Loading textfile to textbox

i wanted to load a text file into a textbox in flash. i went to a tutorial at flashkit and found one which i is pretty simple and i got it working. but now when i want to load the text file in toe the textbox which is in another movie, it doesnt seems to work. i had attached the file which i tried here.
so how do i load the text file in to the textbox which is in a movie clip?