Recommended
You can tell if a question is regeneratable by looking for the shuffle symbol next to the question number in the manifest.
If a question is regeneratable, select the question in the manifest and then press the Regenerate Current Question button.
FX Manifest will regenerate the parameters for this question and then apply the new parameters to any objects in the question and solution.
This process is recommended as it isolates changes to one particular question. We always recommend checking a question after regeneration. Creating parameter-based questions is not simple and you might find that the regeneration does not produce the result that you were after. This process limits any potential problems to one question at a time.