Text from .txt not loading into nested clip

my .txt file is not loading into my nested movie clip for some reason. I think I have directed it correctly (a section of the code is below which I think is the problematic part)

onClipEvent (load){
_parent.contents.vitaHolder.loadText.onLoad = function() {
_parent.contents.vitaHolder.daTextBox.html = true
_parent.contents.vitaHolder.daTextBox.htmlText = this.daTextBox;

I have always had problems with loading outside text into nested mcs. Hoping to understand once and for all!!!