Hi @Harry N Nomikos ,
According to my research and testing ,unfortunately, there is currently no way to achieve it. Per my test, if we add Formula and User message in survey ,we will not able to submit the survey when we click the "Finish".
I suggest you can propose a feedback on this issue, Many features of our current products are designed and upgraded based on customers’ feedback. With requirements like this increase, the problem may well be released in the future. Thanks for your understanding.
feedback:
https://feedbackportal.microsoft.com/feedback/
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