to change the size of your TextBox
TextBox > set size to width and height (could be an equation how big the text is and how many lines)
and of course you need to resize your bubble to (similar to textbox)
You can also wrap text, ...
Like if your text is coming from an array you could ask that after x letters make a new line (but wait for space or -)
so your textbox looks something like this
"some text from array " &newline& "the rest of the text"