Hi friends,I'd like to ask participants to provide the last four digits of their mobile phone numbers.For example: Phone number: 0938 42 62 42 => The last four digits: 6242I choose Text => Content Valiadation => Number. However, I dont' want some situations such as:Put only 1, 2, or 3 numbers. For example: 6 or 62 or 624Space. For example: 62 42 Include other characters (. , - ;). For example: 62.42 or 62-42This is anonymous code which matchs their responses overtime, therefore, it should be correct to use logic display in the later surveys. What should I do to avoid these cases? Thank you!
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