Scroll Pane and Dynamic Text Field

I've had success creating a scroll pane for which its contents are static text and a button. However, I'm unable to make the scroll pane compatible when a dynamic text box.

The method I'm using is as follows:

(1) Create scroll pane that conforms to the size of the main stage.

(2) Create a large rectangle that is the exact same width of the scroll pane but much larger in its height

(3) Transform all the content within the rectangle into a Movie Clip.

(4) Use the title of the Movie Clip as the source of the scroll pane.

When I run the code, the error message I get is: "Access of undefined property [name of dynamic text box]".