Hi,
You will need to do a few things to achieve what you are after.
You will need to set the StepGroup to the Cleanup:
RunState.Caller.RunState.StepGroup = "Cleanup"
Then the Step index to point to the beginning of the group:
RunState.Caller.RunState.StepIndex = -1 and RunState.Caller.RunState.NextStepIndex = -1.
Just add these expression in your expression call step and set the post action to normal.
(As an example look at the PostStepFailureCallback and what it does to achieve repeating the same test)
Hope this helps.
Regards
Ray Farmer
