So, i tried what CarryDude said :
it doesn't work for me, but i tried different thing :
i saw an other IOProviderClass key in the file, so I put the dict section just below.
but it break the kext, i couldn't load it.
so i tried to put only locale and country code below the IOProviderClass, and I get the same result as CarryDude said.

So I will continue to try different thing.