I add a string under " return unless my $search_string = $IN->param('search_string');"
$search_string =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
but it seems not work.
$search_string =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
but it seems not work.