New answers tagged regex
The regular expression should be ^[a-zA-Z0-9,./()]*$, where $ at the end means the end of the string. This forces the entire contents to consist of the specified characters. Also, you don't normally pass a range into data validation formulas: it should be the reference to the upper left corner of the range. For example, if your range is A2:E20, the formula ...
Top 50 recent answers are included