How can I create a conditional for a sum?

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    Asked on March 10, 2018 at 07:43 PM


    I have included in my form a Multi-line Question, part of which is number (%).

    So, participants will have to include a criterion and then a weighting factor. 

    I would like to include a conditional where if the sum of all weighting factors is different to 100, then the form could not be submitted.

    However, I could only find how to apply conditionals in individual responses/values and not to a combination of them (sum in my case). Is there any other way I could do that?

    Many thanks in advance for your response.


  • Profile Image
    Answered on March 10, 2018 at 11:14 PM

    I checked the last form you edited and the form was not found.


    Could you please provide the form link where you need assistance so we can check it further?

    I think we can use the Show/Hide condition to hide the Submit button if the condition is met. Here's a guide:

  • Profile Image
    Answered on March 11, 2018 at 03:43 PM
    Hi there,
    The link is:
    Can you access it now?
    The idea is that in Question 3: Peer Assessment Criteria to embed a conditional that all weighting factors need to sum up at 100%. So, I would like the sum of: Peer Assessment Criterion 1 Weighting Factor + Peer Assessment 2 Criterion WF + PA 3 WF+ PA 4 WF to be equal to 100%, otherwise the participant can not proceed with the submission.
    Would something like this be possible?
    For now, I can only embed conditionals in only individual cases… and even so, it seems that I can not disable the submission.
    Hope it is clearer now.
    Many thanks in advance,
  • Profile Image
    Answered on March 11, 2018 at 05:26 PM

    I just cloned your form, and it only has two fields in it, and no conditions or anything else, that would give us a clearer idea of what you are trying to do:


    If you need to perform calculations, please check the following guides: 




    You can also perform calculations through conditions: