Try this line instead:
Key0=0xC0,C,"~"
I think the game looks for the upper case equivalent of the key and this is the line that is entered in my commands.cfg file (which mod it came from, I don't know:rotfl
As for the search function, the one here doesn't like 3 letter words. I use the "search site" function of google to search here and it works much better and allows the advanced functions (quotes around several words to look for the exact group of words, etc.). The disadvantage there is that you can't search one forum or one thread, it searches the whole site.