timestamp parse error

Hello!

i'm using PostgreSQL 7.2.1 and got strange parse errors..
could somebody tell me what's wrong with this timestamp query example?

PostgreSQL said: ERROR: parser: parse error at or near "date"
Your query:

select timestamp(date '1998-02-24', time '23:07')

example is from PostgreSQL help and certainly worked in previous versions of
pgsql.. but in 7.2.1 it does not. had anything changed and not been updated
in pgsql manuals or is it a bug?

thanx for any help

Tomas Lehuta