Why seive doesn't work for me?

[Sungsoo Kim]

I put a script named "test" into my sieve server using sieveshell.
And the script was successfully put into the sieve server.
The list command in sieveshell shows the name of the "test" script.
And I activated it.

The "test" script is like this:

    require "fileinto";
    if header :contains "Subject" "test" {
        fileinto "INBOX.test";
    }

I checked that "test.script" exists in /var/lib/imap/sieve/k/kiss^my^domain directory. Of course the INBOX.test mail was created.
But when I send a mail to my account, the mail is put into INBOX.
I tested using the same SMTP server with IMAP server and another
outside SMTP server. The result was same.

I think sieve doesn't work properly.
What's wrong with me?

Thanks!