Well, I thought I was done with 2.2 demos, but I'm adding another to the list. Making a REAL text box in Stencyl is a tricky thing as it requires real AS3 code, but I did my best to simplify it (and add a large comment for how to use it, in addition to premade comments by the original creator). It will still take understanding how the two codes work together (which is why I did it as a game, not as individual behaviors), but hopefully it can help some people out.
"Demo- Real Text Boxes" is now up in the 2.2 StencylForge!