Is there any way I can limit the respondent to provide the answer to be a 500 multiplier on the free text answer field? I have searched all around but it seems nothing available. I have tried to validate the answer by limiting last three digits to be either "000" or "500" by match regex. But I am sorry I have zero knowledge on this field, so any helps on this will be very much appreciated.
Thank you so much for all your attention to this question!!
Best answer by TomG
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