I use some scandinavian keyboard, because I live in Finland.
I found out that I can't write '[' (or any other sign that needs ALT) in any GE program on that computer, got to try with other one.
And I'm not using this for anything, just wanted to check it out.
EDIT:
Solved that problem. I just had to try other keys, and I finally found keys that acted as '[' and ']'. (^-key and å-key.. )
So, now I can use it.