How do I add a scrolling input text box in an EditorWindow?

How do I add a scrolling input text box in an EditorWindow?

I've been searching for a while, trying to figure out how to making a scrolling text input box for my Unity Addon I'm building. I've had 0 success in finding a solution that works.

In essence, I need to add a scrolling editable text area to my editorwindow to allow the user to input data, with unknown length, into my extension.

I've tried the following:

Code (csharp):

1.  
2.                 ScrollPos = EditorGUILayout.BeginScrollView(ScrollPos,GUILayout.Height(100));
3.                 EditorGUILayout.TextArea(ParseData,GUILayout.Height(200));
4.                 EditorGUILayout.EndScrollView();
5.  

Where ParseData is a string, and ScrollPose is a Vector2.

This is the structure of the code I've been seeing everywhere; however, it only encases the textarea with a scroll bar, and doesn't add it to the textarea itself. As I add lines to the text area, there is no way to actually scroll the text.

Am I doing it wrong, is there supposed to be a different way to do this?