Language problem with Firmware Password

A pretty big flaw when setting the Firmware Password is that you could choose what language you input source should be in.

For example; I'm from Sweden, so i wrote my password with swedish characters... and of course I used special characters and maby swedish letters...

However when you need to access the firmware, and then get promted to type you password, the input soruce is automatically in US characters... this means that when im trying to write my password, I get a whol lot of different characters, and thus writing the wrong password.

When setting the firmware password Apple should inform about this, that you should use only US characters, OR let you be able to choose what input language to use when entering your password.

So if you have set your firmware password in you native laungage, and then can't get in, maby this is you problem.