I am unable to create a service case when creating it as a temporary work object.

Mentioned below are the steps I have followed. Also attached screenshots of the implementation

1.I have modified the OOTB GeneralServiceRequest Case type to create a temporary work object.

2. In the flow (CAGeneralService flow), I have placed 2 assignments, both with flow action Action Stub

3. In step 3, I persist the case

Execution :

1. I create an Interaction case, from the demo call

2. I create a general service flow and keep clicking on submit/confirm buttons till the last screen.

  Once done, I click on the General Service Intent Task tab on left hand side (The same which was clicked earlier to create the case)

3. I get a pop up alert displaying "Empty Work Item Handle"

Appreciate any help with this