Assigning Dynamic Values to Scenario Variables

Hi guys,

 

I'm on the process of creating a scenario where I will need to set data values during the recording. Basically in the recorded scenario, a user will provide a caseID. I will need to replace that input value through code expression to make it more dynamic, and store it in variable which will be called upon in every iteration. Is this possible? If so, how?

 

Please advise. Thank you.