Error responses Hospital-Service-JDK11-2.0.0.jar

[Marsanm]

Hi im have a error in some responses. An example:

Expected response:
{
"appointmentNo":1,
"doctorName":"thomas collins",
"patient":"John Doe",
"actualFee":7000.0,
"discount":20,
"discounted":5600.0,
"paymentID":"480fead2-e592-4791-941a-690ad1363802",
"status":"Settled"
}

Reiceved:
{
"patient":"John Doe",
"actualFee":7000.0,
"discount":20,
"discounted":5600.0,
"paymentID":"480fead2-e592-4791-941a-690ad1363802",
"status":"Settled"
}

An other issue is some url to service couldnt be found(http://localhost:9090/healthcare/appointments/validity/${appointmentNo}), when i am trying to send a mail with BPS i cant because noOfDays give me a error:

ERROR {org.wso2.carbon.bpmn.rest.common.provider.ExceptionMapper.BPMNExceptionHandler} - Activiti Exception Occured org.activiti.engine.ActivitiException: Unknown property used in expression: ${noOfDays >2}

if use a GET with some pacient added before i recieve this reponse: Problem accessing: /healthcare/appointments/validity/1. Reason: Not Found

Im following Tutorial step by step and I've done it twice with same result.