Show subtitles only when english is not spoken

I am trying to watch my .mkv files for movies that are normally spoken in English but have parts where it is spoken in a different language. Typically when I just watch the disc on WMC the English subtitles show up only when non-English language is spoken. Is there a way to do this with the Codec Pack? I have checked the FAQ and forums and I haven't been able to find anything yet. I am either able to get the subtitles to show up all the time or not at all (Direct VODSub - Misc Tab - Hide Subtitles). I tried using the VodSub settings 'Only show forced subtitles' but that didn't work.

Windows 8
Windows Media Center
Codec Pack Basic 9.8
Codec Pack 64bit 9.8

Thanks for the help!

It has no way to differentiate between English and non-English text. It will simply display all lines.

Sometimes files have multiple subtitle tracks, where one contains all the text and one contains only non-english stuff. But I guess that is not the case for the files you have.