MySQL Cluster - strange syntax error

Question

I have MySQL Cluster instance and want one column (BLOB) to be stored on disk instead of memory.
I tried to follow this tutorial: http://mikaelronstrom.blogspot.com/2006/02/how-to-define-table-that-uses-disk.html
And this is output I am getting:

mysql> CREATE DATABASE test1;
Query OK, 1 row affected (0.00 sec)
mysql> use test1;
Database changed
CREATE LOGFILE GROUP lg1
    -> ADD UNDOFILE 'undofile.dat'
    -> INITIAL_SIZE 16M
    -> UNDO_BUFFER_SIZE = 1M
    -> ENGINE = NDB;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '16M
UNDO_BUFFER_SIZE = 1M
ENGINE = NDB' at line 3

Here is syntax for this command: http://dev.mysql.com/doc/refman/5.5/en/create-logfile-group.html
Any ideas why this is not working? I cannot find where I am violating this command syntax.