Not all named parameters were set to sleep in createSQLQuery

I get an error message not all named parameters are set . Below is my code.

my SqlQuery, which works great when calling mysql, you can reference the schema in the SQL Query question

SELECT  t.*
FROM    (
    SELECT  @lim := 2,
            @cg := ''
    ) vars,
    (select * from Table1 order by product,amount, make)  t
WHERE   CASE WHEN @cg <> product THEN @r := @lim ELSE 1 END > 0
    AND (@r := @r - 1) >= 0
    AND (@cg := product) IS NOT NULL
ORDER BY
    product,amount, make

my java code

try {
             context.dbl.startTransaction();
             Session session = context.dbl.getSession();

             //String sqlQuery = "from com.infibeam.inventoryservice.dbObjects.PopularBrandDO";
             String sqlQuery = "SELECT  t.* ";
             sqlQuery=sqlQuery + "FROM    (";
             sqlQuery=sqlQuery + "SELECT  @lim := 2,";
             sqlQuery=sqlQuery + "@cg := ''";
             sqlQuery=sqlQuery + ") vars, ";
             sqlQuery=sqlQuery + "(select * from Table1 order by product,amount, make) t";
             sqlQuery=sqlQuery + " WHERE   CASE WHEN @cg <> product THEN @r := @lim ELSE 1 END > 0";
             sqlQuery=sqlQuery + " AND (@r := @r - 1) >= 0 ";
             sqlQuery=sqlQuery + " AND (@cg := product) IS NOT NULL ";
             sqlQuery=sqlQuery + " ORDER BY product,amount, make";
             //Query query = session.createQuery(sqlQuery);
             SQLQuery query = session.createSQLQuery(sqlQuery);
             listItems = query.list();


            }catch(RuntimeException e) {
                e.printStackTrace();
            }

Below is the exception that I am getting

org.hibernate.QueryException: Not all named parameters have been set: [] [SELECT  t.* FROM    (SELECT  @lim := 2,@cg := '') vars, (select * from Table1 order by product,amount, make) t WHERE   CASE WHEN @cg <> product THEN @r := @lim ELSE 1 END > 0 AND (@r := @r - 1) >= 0  AND (@cg := product) IS NOT NULL  ORDER BY product,amount, make]
    at org.hibernate.impl.AbstractQueryImpl.verifyParameters(AbstractQueryImpl.java:291)
    at org.hibernate.impl.SQLQueryImpl.verifyParameters(SQLQueryImpl.java:199)
    at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:143)
    at com.infibeam.weaverbird.helper.PopularBrandFacetHelper.bootstrap(PopularBrandFacetHelper.java:48)

Thanks in advance...