How to split query by user on proxysql

Hi.
I am testing using PXC & Proxysql.
I would like to split some query of specific user(etl), so I added query rule like this:

mysql> select rule_id,active,username,match_pattern,apply,destination_hostgroup from mysql_query_rules;
±--------±-------±---------±---------------------±------±----------------------+
| rule_id | active | username | match_pattern | apply | destination_hostgroup |
±--------±-------±---------±---------------------±------±----------------------+
| 3 | 1 | NULL | ^SELECT.*FOR UPDATE$ | 1 | 0 |
| 4 | 1 | NULL | ^SELECT | 1 | 1 |
| [COLOR=#FF0000]5 | 1 | etl | ^SELECT | 1 | 2 |
±--------±-------±---------±---------------------±------±----------------------+
3 rows in set (0.00 sec)

And then I tried to test using sysbench,but it was not working as I thought.
Does it need any other configuration for this?