size of Text Edit Box

[#1]

I have a script, requesting a comment  from the user. 
I use a text edit box, but cannot modify the length of the box (on the screen).
Any Idea how to set a value for the length (like 40 characters, 2 lines, ...) since I want the user to type in detailed comments
example:

H List Box(
     Text Box( "Type in  comment: " ),
      teb = Text Edit Box( initial_text)
),
Spacer Box( size(1, 10) ),
H Center Box(.....

Edit (jthi): added jsl formatting

[#2 · Accepted solution]

I believe width of Text Edit Boxes is always set in pixels.

Names Default To Here( 1 );
New Window( "text test", Text Edit Box( "", <<Set Width( 250 ), <<SetNLines( 2 ), <<Set Hint( "This is a text box you\!Ncan edit!" ) ) );