Looks like you confused a bit.
Actually what you 'retrying to do should certainly work, but you did some small mistakes in your code and in your understanding.
Look at some samples of codes.
Also it looks like you should do
$button_submit->configure(-text => 'helloo');
Your "$varname" is really not defined, as Perl explains to you.
Also remember that you have a method $widget->update; to redraw your GUI at a moment to reflect your current changes.
Courage, the Cowardly Dog
Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
Want more info? How to link or
or How to display code and escape characters
are good places to start.