If the original plugin works by clicking on "Get Plugin" then I recommend that you verify that your compilation method is working properly by compiling the original source code (no modifications). To be safe, you should use the compiler that matches the version of AMX Mod X that you are running (though if you compile with 1.8.2, it should work just fine on AMX Mod X 1.8.2).
If this works then you're likely doing something wrong with your modification, at which point, you'll need to post your code so that we can help you figure it out.
P.S. I just noticed that this plugin is in the unapproved forum. You should use one that is in the approved forum (like
this one).