RESOLVED – .htaccess issue

I can not believe I can not make it work.

I have the following url
/int/FULL-DEC18-100-F899139DF5E1059396431415E770C6DD.pdf

And I have to rewrite this

/int/index.php?$1

I have this





RewriteEngine On
RewriteCond% {REQUEST_FILENAME}! -F
RewriteCond% {REQUEST_URI} int
RewriteRule ^ int /(.*) /int/index.php [NC,L]
Code (markup):

But I get an error of 500.

An idea of ​​what I'm doing wrong?