Please, help me with use db2 function in PreparedStatement

[whim]

Hello everyone!
I am having my own db2 function. Function return table.
FUNCTION GETTAB_MY_INIT(
recid INT)
RETURNS TABLE

In java program i do:

PreparedStatement ps =null;
String s = "SELECT * FROM TABLE(WE.GETTAB_MY_INIT("+user+")) INIT where IDREG = ?;";
ps = preparedst(con, s);
ps.setLong(1,Long.parseLong(pr));

It work.
But I am having problem when i do:
String s = "SELECT * FROM TABLE(WE.GETTAB_MY_INIT(?)) INIT where IDREG = ?;";
ps = preparedst(con, s);
ps.setLong(1,Long.parseLong(pr));
ps.setInt(1,Integer.parseInt(user));

And program generate exception
Exeption e= [IBM][CLI Driver][DB2/NT] SQL0418N

Does any one know how can I solve it? How to dinamic use my parametr in call my function as (?) in this select?

Thank you very much for any help.