my @var = ("a","b","c");
my @value = ();
print $co->header;
print $co->start_html();
print $co->h4 ("Variable");
print $co->popup_menu(
        -name => 'var',
        -id => 'var',
        -values => ['Var',@var],
        -default => 'Var',
        -onchange => "selectedVarFns()"
    );
print $co->popup_menu(
        -name => 'value',
        -id => 'value',
        -values => [@value],
    );

# $selected_var shall contain the value selected from 'var' popup_menu
+ and call selectedVarFn() below when value of popup_menu 'var' change
+s. 
# @Value contains all the values corresponding to the popup_menu varia
+ble as defined in the selectedVarFn().
# Everytime I change the value of var popup_menu, selected value shall
+ be reflected in $selected_var and corresponding to that value, value
+ in popup_menu 'value' should be updated.
#Please update the above program to reflect the requirements.

sub selectedVarfn {
 open (FILE , "../file.txt");
 my $count = 0;
 foreach $Line (<FILE>) {
    if ($Line =~ /$selected_var/) {
       $value[$count] = $Line;
       $count++;
    }
 }
 close (FILE);
}
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