Hi, does anyone know if we can use variables with mod_substitute? I have some apps that respond to html on different ports in the same machine (that I don’t know in advanced), and I would like to access them through a proxy using an URL like http://myhost/app/1001. With this URL, I can connect to http://localhost:1001/. The problem is that I would like to prepend all addresses in the pages that those apps respond, with the port number of the app. I am trying to use mod_rewrite and mod_substitute. I can access each app in turn, but not managed to properly substitute the urls. I wonder if I could used the env variable set by LocationMatch, or some other method to achieve similar result. Here is my configuration: <LocationMatch “^/app/(?<uiport>\d+)"> SetOutputFilter INFLATE;SUBSTITUTE;DEFLATE AddOutputFilterByType SUBSTITUTE text/html Substitute s|href="">"/"|href="">“/app/${env:MATCH_UIPORT}"|n </LocationMatch> Best regards, João |