Hi @martin.kustek , I cloned your app from the link where you asked about parsing a column and I just wanted to make you aware that you have both the Ballot and Votes tables as editable directly by forms:
This is insecure and will allow any malicious actor to violate the integrity of the vote information and or modify the ballot information for any potential future users.
Any and all code that changes the actual voted information should be passed through a server function that updates the table information, and that callable function should be properly secured using some kind of user authentication function passed to the @anvil.server.callable() decorator.