If you want a pretty interactive mode what you could do is the following:
- Create Workflow
- Attach Promptset without PSU Cycle choice to Workflow
- Create SCRI-Object. Attach PSU-Cycle choice promptset. Put it as first task in workflow.
- On the SCRI task set the task-property that the promptset should always pop-up
- On the SCRI task precondition do the user-defined logic "IF &PSU_BUILD# != 'NOPSU', RUN ELSE SKIP'
- In SCRI object do a PSET of the PSU CYCLE
:-).