A question about Constant Sum
Dear members of the Qualtrics community,
I want to ask you for advice on how to auto calculate the user option in the constant sum.
Example:
For this question, I would like to this question can auto calculate the total from the other question.
I am sorry, I am new in qualtrics and I am not familiar with JavaScript.
Really thanks for your help.
Best Answers

Assuming we want to add the validation such that the total of this question matches with the total of some other question: In this case, we can add math operation in custom validation
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Qualtrics has not created a support page for this specific use case. Check out this support page on Math operations: https://www.qualtrics.com/support/surveyplatform/surveymodule/editingquestions/pipedtext/mathoperations/
Once you have your math operations set, you can then use it in Custom Validation in the Constant Sum question: https://www.qualtrics.com/support/surveyplatform/surveymodule/editingquestions/pipedtext/mathoperations/
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Answers

Really thanks for your help. I am sorry and I am so confused about how to use the custom validation.
May I know where can find the user guide for the custom validation?
Many thanks.🙇♂️
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