Retrieving output from a process thru Remote API

[brepine]

Hello,

I'm quite new to jBPM.

We're attempting to implement jBPM 6.2.0.Final as a service and I am currently trying to invoke a process thru the Remote API and then retrieve its output.

Can anyone point me to an example of this?

I'm able to do this thru successfully the Java API via:

...
KieSession kSession = kContainer.newKieSession();

Map<String, Object> params = new HashMap<String, Object>();
params.put("input", "someData");
ProcessInstance processInstance = kSession.startProcess("com.sample.bpmn", params);
List myList = (ArrayList) ((WorkflowProcessInstance) processInstance).getVariable("output");

I tried similar thru the REST API but there is no "getVariable" operation on the JaxbProcessInstanceResponse:

...
RuntimeEngine engine = RemoteRuntimeEngineFactory.newRestBuilder()
                .addDeploymentId(deploymentId)
                .addUrl(baseUrl)
                .addUserName(user)
                .addPassword(password)
                .build();
KieSession ksession = engine.getKieSession();
Map<String, Object> params = new HashMap<String, Object>();
params.put("input", "someData");
JaxbProcessInstanceResponse processInstance = (JaxbProcessInstanceResponse) ksession.startProcess("com.sample.bpmn", params);

Am I on the right track?
Thank you.