Update sub-process variables dynamically

[axferreira]

**Using script task event and setting the variables manually worked.

[openpj]

Try to get the RootProcessInstance and then you should get or set parameters from there:

ExecutionEntity yourCurrentExecutionEntity = (ExecutionEntity) execution;
ExecutionEntity processInstance = (ExecutionEntityImpl) Context.getCommandContext().getExecutionEntityManager().findById(yourCurrentExecutionEntity.getRootProcessInstanceId());