Oracle Database Discussions

Dear all,
I want to know wether it can not use funcion when in create partition tables?

create table tb_hxl_user_rh
(
  statedate number,
  provcode number not null,
  usernumber varchar2(13) not null,
  rem1 varchar2(1024),
  create_date date,
  create_by number,
  last_update_date date,
  last_update_by number
)
partition by range (statedate)
(
  partition HXL_USER_20110516 values less than (to_number(to_char(TO_DATE(' 2011-05-17 00:00:00', 'YYYY-MM-DD HH24:MI:SS'),'YYYYMMDD')))
);

ORA-14019: partition bound element must be one of: string, datetime or interval
literal, number, or MAXVALUE