I use putty to connect to a Linux server with a Firebird database. I read the database using ISQL.

Since i set putty to UTF8, i can see and paste correctly any language, including Chinese, Arabian etc. on the shell.

But when I try to use ISQL and paste unicode, the unicode letters are not shown.

I can only see the Unicode. For example if i do
isql /path/my_db.gdb
Select * from tab_with_Unicode_fields;
i see correctly the lines that contain Chinese or any other language.
What i cannot do is writing Unicode on the isql shell, for example i cannot paste Chinese. I cannot do:
Select * from tab_with_Unicode_fields where name='中文';
So if i want to add Unicode, I must create a file with the query, and I must import it.
Any suggestion?