In the general case, this is tricky, but you might be able to handle it by using the diary function and reading from the diary as it is being created. I think this requires R2013a or later if you are using MS Windows (or else the buffering will not be right.)
In the more specific case of you wanting to capture the result from a specific operation at the time you run it, then replace
your expression here
with
T = evalc('your expression here');
and then send T to the static text box String property. Or better yet,
Tcell = regexp(T, '\n', 'split');
and send Tcell to an edit box String property for an edit box that is set with 'enable', 'disable' and 'Max', 2 . The edit box will act like a multi-line scrollable text area.
