[Q]Setting global variables.

Perl Gurus,
   How can I set global variables in perl.?
I'm trying to do something like..

if(param())
{
my $myvar=param("myvar");
if(param("myvar2"){
use $myvar here..
Has some script to show a form..

}
else {
On submitting the form, user enters here..
someother use of $myvar..
Here, my script is showing value of $myvar as null.
I wanted to use the same value of myvar which I had
before submitting the form.
}

Am I missing something? Or should I set a global
variable for myvar?!
Thanks
Bhanu.

=====
Bhanu Prakash G V S

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• [Q]Setting global variables. by Bhanu Prakash
• Re: [Q]Setting global variables. by Jonathan E. Paton