cluster update resturen error

When use 'senlin cluster-update cluster_007 -n cluster_002' operation, the update succeed，　But the cluster-update operation return error, the return parameter is old value.

# senlin cluster-update -n cluster_002 cluster_007
WARNING (shell) "senlin cluster-update" is deprecated and will be removed by Apr 2017, please use "openstack cluster update" instead.
+------------------+---------------------------------------------------------------+
| Property | Value |
+------------------+---------------------------------------------------------------+
| created_at | 2017-07-26T10:22:42Z |
| data | {} |
| dependents | {} |
| desired_capacity | 0 |
| domain_id | - |
| id | a3204978-81c7-459c-b234-13182a4c3c23 |
| init_at | 2017-07-26T10:22:42Z |
| location | - |
| max_size | -2 |
| metadata | {} |
| min_size | 0 |
| name | cluster_007 |
| node_ids | |
| profile_id | 6270d807-878e-41d6-a631-97eafb2b921f |
| profile_name | profile_nova_net_none |
| project_id | 93236417c37d49b4b027f1811ec5af5e |
| status | ACTIVE |
| status_reason | update: number of active nodes is above desired_capacity (0). |
| timeout | 300 |
| updated_at | 2017-07-27T07:35:29Z |
| user_id | 25d852bb5c9a4f87997467eeeb461d71 |
+------------------+---------------------------------------------------------------+