How to string together multiple statements in a validation expression?

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Hello, I'd like to string together multiple statements saying that these enumerations must be filled in before answering the a final question asking if "Have you answered all questions?". I'm a beginner to expressions and do not know how to string together multiple statements and also how to close it.
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1 answers
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You need to use a '+' operator for String concatenation, rather than 'AND'.

 

The Mendix documentation has a good section on string concatenation techniques that you will probably find useful.

https://docs.mendix.com/refguide/string-concatenation/

 

I hope this helps.

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