Values are not parsing in the new ReadyAPI Versions

Hello,

I Created a test step where It will generate the request body.For That I Used to run a run test-step in which there is another run teststep which updates the firstname and last name .When I was using the previous ReadyAPI 2.2.0 version.It was working fine.but for the later versions. For the first time it will not take empty test case property instead Which I generated and set up the Testcase property name.for the second run it will take the values I generated.Please let me know if there are any modifications I should do ?

Request Body:

def requestBody= '''{
"FirstName": "${#TestCase#FirstName}",
"LastName": "${#TestCase#LastName}"

}'''.

 Let me know If I amdoing anything wrong