kb2yht has asked for the wisdom of the Perl Monks concerning the following question:

Hi perl Monks.

I'me trying to make a, err... well ... its a Tk window with a Label in it,
thats it, and the label just has a number in it.
The Number is stored in $foo. and is updated by the program every 5sec or so.
How do I get the number to update in the Tk window ??
the window is just
$mw = MainWindow->new;
$tes = $mw->Label(-text=> "$foo");

I know it must be trivial to do ,
I just cant do it :-( .
Many thnaks