How to set recording options to only recording the last loop?

So I have some steps in a for loop, and right now everything time the loop executes it records, even if it fails. How do I record only the last iteration in the loop? I want it to record the last iteration even if it fails or if it passes. Sometimes it will pass on the first iteration, and if it passes then it will skip the rest of the iterations on the loop, and then I want to record that pass. Sometimes it will go through all iterations and fail all, but I only want to record the last. How do I do this? Thanks in advance.