Hello - I used SP2016 on premises. I would like to validate Multiple lines of Text Box (Comments field) not allow special characters. How can I validate it with Nintex Form Validation Rule? I’m appreciated for your help.
Validate Multiple lines of Text Box not allow special characters
Hi
Great question.
Unfortunately, the validation features do not allow for a regular expression, so you will have to use a long rule that checks if the text in the control has a special character.
The below checks for two special characters, but you must keep adding || or statements to this rule for each character you want to check.
contains(MLT,"?")||contains(MLT,"@")
![Articulate Badge](https://uploads-us-west-2.insided.com/nintex-us/attachment/a37de6bf-4eb2-4f04-9b70-33bd0b2b776d_thumb.png)
It works. Thanks, SimonMuntz.
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