I need to transfer a form text field to a %user_input% value. However, I am receiving error "% % are invalid characters."

At this stage, I am manually typing in predetermined "users.html" into the code:
<br><br><My:File name="manuallytyped.html">without using the %% variables.

I need a method so that the user is allowed to type in their own page names "users_input" field - ex: "Link1.html" can replace

<My:File name="<b>%user_input%</b>">

Note: Changes made to no avail:
    foreach (split(m!</Genesis:File>!si, $template)) {
            next unless (m!<Genesis:File name=\"(.*?)\">(.*)!si);


            my ($file) = ($1);
        #    print "\t" x 3, '<li>';
            if (-e $file) {
        #        print qq!<a href="$STATE{'web_path'}$file">$file</a> 
+- $str[152]!;
                }
            elsif ($file =~ m!\%!) {
        #        print "$file - $str[151]";
                }
            else {
                print $file;
                }
        #    print "</li>\n";
            }
        print "\t\t</ul>\n";
        last Err;
        }
    return $err;
    }

[download]

This does not work:
        foreach (split(m!</Genesis:File>!si, $text)) {
            next unless (m!<Genesis:File name=\"(.*?)\">(.*)!si);
            my ($file, $text) = ($1, $2);

            # strip leading and trailing vertical whitespace
            $text =~ s!^(\015|\012)*!!s;
            $text =~ s!(\015|\012)*$!!s;

            my $is_cgi = 0;
            ($temp_err_msg, $is_cgi) = &CheckName( $file,1 );
            if ($temp_err_msg) {
                push(@temp_errors, $temp_err_msg);
                next;
                }

[download]

In reply to passing user form input value to %placeholder% by rick

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