JDBC :: How To Retrieve Just One Value From Database

I wish to retrieve just one value from db;
 
so I use this code:

@Transactional
    public long getSequenceSedeB(Long id) {
        BigDecimal seqValue = nu
        String sql = "SELECT MAX(ID) FROM SEDE_B_ALLEGATI_A WHERE ID_SEDE=:id";
        SQLQuery query = getSession().createSQLQuery(sql);

[Code] ....

But it do not works; this is the log.

type.NullableType (NullableType.java:182) - could not read column value from result set: ID; Invalid column name

2014-11-25 14:45:14,476 WARN  [btpool0-2] util.JDBCExceptionReporter (JDBCExceptionReporter.java:77) - SQL Error: 17006, SQLState: null
2014-11-25 14:45:14,478 ERROR [btpool0-2] util.JDBCExceptionReporter (JDBCExceptionReporter.java:78) - Invalid column name

 But in the database the query
 
SELECT MAX(ID) FROM SEDE_B_ALLEGATI_A WHERE ID_SEDE=:id
 
run correctly;
 
Also I need to rewrite the statement
   query.setParameter("id", 923);
in this way
   query.setParameter("id", AAA);
 
where AAA is gotten from out of the procedure;