Dynamic text in a movie clip

I’m trying to put a site together in which the owners can update their text. I’ve done this before on other sites without any problems but I cant get it to work this time. I’m assuming this is because this time the text field is within a movie clip rather than in the _root directly (i’m also having problems with input text. presumably for the same reason). This is the code I’m using to call up the .txt file:


I’ve tried putting the name of the movie clip and instance name of the movie clip in which the text field is embedded in there except “_root” but I’m still having no joy.

Can anyone help?