Get AuthorizationException when trying to update variables of a started workflow

I'm trying to set some workflow variables just after starting a workflow with this code:

```python
clients = OrkesClients(configuration=config)
executor = WorkflowExecutor(config)
runner = clients.get_workflow_client()

request = StartWorkflowRequest(
name="flow", correlation_id="corr_id", version=1)
flow_id = runner.start_workflow(request)
runner.update_variables(flow_id, variables={"myglobal": "global"})
```

But I'm getting a 404 error, which is returned as result of an internal `ApiException` raised from `conductor/client/http/rest.py`. It seems it is unable to reach `/workflows/{workflow_id}/variables`:



Could this be something related to the workflow still starting execution?