Define Array Data Type In Stored Proc

Hi,
I'm trying to define a passing parm as ARRAY but could not get any luck. Please Help!

Here is what I have:

CREATE PROCEDURE NCSS_SEL_P100N (
IN p_startdate DATE,
IN p_enddate DATE,
IN p_user VARCHAR(32)
)
LANGUAGE SQL
RESULT SETS 1
P1: BEGIN
...
...
END P1;

And I'm trying to do:

CREATE PROCEDURE NCSS_SEL_P100N (
IN p_startdate DATE,
IN p_enddate DATE,
IN p_user[100] VARCHAR(32) -- ???? WANT p_user an ARRAY but could Not find a way ?????
)
LANGUAGE SQL
RESULT SETS 1
P1: BEGIN
...
...
END P1;