Export any resource within plugin

Hi,

i'm currently writing a plugin for intellij, which internally needs some prolog sources, i want to bundle in the exported plugin. My idea was to, as with icons, create a subfolder in a directory called "resources" (which is set as a content root in the module settings of the plugin) which contain the prolog sources. Unfortunately, the prolog sources and also the folder, yet the icons are. I think this is due to the file extensions. Is there any way to make intellij export all files, despite their extension?

Below, a structure of the plugin and the files, which are not exported:

myplugin
     + lib
          ...
     + META-INF
          ...
     + resources
          + icons
               ...
          + prolog                   <-- this folder and its contents are not exported, everything else is, as it should be
               - someFile.pl
               ...
     + src                         
          ...
     ~ External Libraries

(+ indicates a folder, - a file, ~ a lib entry)


Hopefully anybody can give me a hint. I somehow already got it to work in an eralier version, but unfortunately the folder isn't exported anymore.
Thanks a lot for any help!

Cheers,

Philipp