Hi All, I'm attempting to write a survey in which I ask respondents "What is your project number?". I want their answer to be limited (only) to a 6 digits number and if it isn't to display an error message. How do I ensure that they only enter a number and its 6 characters in length; as well as add an error message? Thanks in advance
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Thanks @MSobotta. This worked perfectly. One quick followup question. How do I add a customized error message to this option?
One way is custom validation: !
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