I could not create dynamic post through URL by .htaccess, Page or Post redirect automatically 404 page.

I have tried Redirection Plugin, but i could not successfully redirect. Please try to give me solution, Thanks in advance.

Original Url - ;sign=topic

Modify Url -

.htaccess code:

Options +FollowSymLinks
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

RewriteEngine On 
RewriteRule  ^subject/(\d+)?$ ./subject-detalis?sign=$1&type=$2