FIltering or validate fields/source

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Hi, I have a case where I'd like to filter the source live or validate those rows. What do I mean? If I select a number from 1 to 40, lets say 1, from a field, I won't be able to select that position in the next row. I'd like to do this in a way that doesn't require the user to save the form a hundred times ( everysingle pick ) or using have the system throw them away and redirect them to the same table on the form.
List is already implmnetet with 40 rows, user job is scale those rows from 1 to 40

Does anyone have any ideas or have similar examples already done?