Change owner of file with WRITE_OWNER acl permission in nfs4 connection

Hello, I am trying to change ownership of files using nfs4 WRITE_OWNER permission.

I have 'admin' user in FreeIPA. I want it has permission to change file ownership on my nfs share. The access to the share via nfs4.2 connection with krb5 authentication.

I put this nfs4 acl line to a file which is owned by another user.

A:fd:admin@domain.com:rwaDxtTnNcCoy

Because I gave it WRITE_OWNER (o) permission, expected it can change ownership of the file. But when I try 'chown' on it, I got permission error.

Is there anything I am missing? Thanks!