Need to Implement Custom Pages That Execute PHP Code

[cellarius]

I can't imagine that you're using the FORUMHOME template for your custom php file, do you really? You are registering your variable for that template, but you need to register it for the template you actually use for your custom php page. If you want to output something on forumhome, you don't need a custom php page. You would put your code into a plugin.