How can i handle brotli compression on concatenated JS and CSS by your plugin?

I am on HTTP2 and using brotli compression in htaccess with below code. How can i compress (brotli compression) to concatenated / optimized JS and CSS by your plugin?
Am i doing something wrong here ?

<IfModule mod_headers.c>
# Serve brotli compressed CSS files if they exist and the client accepts brotli.
RewriteCond %{HTTP:Accept-encoding} br
RewriteCond %{REQUEST_FILENAME}\.br -s
RewriteRule ^(.*)\.css $1\.css\.br [QSA]

# Serve gzip compressed CSS files if they exist and the client accepts gzip.
RewriteCond %{HTTP:Accept-encoding} gzip
RewriteCond %{REQUEST_FILENAME}\.gz -s
RewriteRule ^(.*)\.css $1\.css\.gz [QSA]

# Serve brotli compressed JS files if they exist and the client accepts brotli.
RewriteCond %{HTTP:Accept-encoding} br
RewriteCond %{REQUEST_FILENAME}\.br -s
RewriteRule ^(.*)\.js $1\.js\.br [QSA]

# Serve gzip compressed JS files if they exist and the client accepts gzip.
RewriteCond %{HTTP:Accept-encoding} gzip
RewriteCond %{REQUEST_FILENAME}\.gz -s
RewriteRule ^(.*)\.js $1\.js\.gz [QSA]

# Serve correct content types, and prevent mod_deflate double gzip.
RewriteRule \.css\.gz$ – [T=text/css,E=no-gzip:1]
RewriteRule \.js\.gz$ – [T=text/javascript,E=no-gzip:1]
RewriteRule \.css\.br$ – [T=text/css,E=no-gzip:1]
RewriteRule \.js\.br$ – [T=text/javascript,E=no-gzip:1]

<FilesMatch “(\.js\.gz|\.css\.gz)$”>
# Serve correct encoding type.
Header set Content-Encoding gzip
# Force proxies to cache gzipped & non-gzipped css/js files separately.
Header append Vary Accept-Encoding
</FilesMatch>
<FilesMatch “(\.js\.br|\.css\.br)$”>
# Serve correct encoding type.
Header set Content-Encoding br
# Force proxies to cache gzipped & non-gzipped css/js files separately.
Header append Vary Accept-Encoding
</FilesMatch>
</IfModule>

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