How to get Variables Process from jBPM developed by using kie API

[cescobar]

Hi,

I am using the web application named rewards-basic example based on jbpm 6. The question is how to get Variables Process? Because when I performance startProcess and send the parameter as map of variables,

that execution returns a org.kie.api.runtime.process.ProcessInstance;

              Map<String, Object> params =  new HashMap<String, Object>();

              params.put("username", userInfo.getUsername());

              params.put("requisitionId", requisitionId);

              params.put("amount", requisition.getAmount());

              params.put("requisitionTypeCode", requisition.getRequisitiontypecode());

              processInstance = processService.startProcess(params);

But I d like to know if that variables sent as a map were stored and how to retreive them. Those variables were defined into the BPM process definition.

Thanks in advance

CE