Solaris10 acl and zfs samba

I have share with samba
a directory called /var/pubblica
i set write permission correctly on smb.conf and
zfs acl

\chmod A+group:"domain users":list_directory/read_data/add_file/write_data/add_subdirectory/append_data/read_xattr/write_xattr/execute/delete_child/read_attributes/write_attributes/delete/read_acl/write_acl/write_owner/synchronize:allow /var/pubblica

I can delete directories but not files
Why?