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    How to Check Related Checkbox Automatically, If the Desired One is Checked Already?

    Asked by vickileblanc on October 22, 2015 at 06:45 PM


    Horse show entry form.....

    If you enter a class you may have to enter a required class.

    3 year old futurity - $900 entry

     - 3 year old junior futurity - $500 entry (requires entry in the 3 year old futurity)

     - 3 year old senior futurity - $750 entry (requires entry in the 3 year old futurity)


    If the person selects one of the sub classes, I would like it to automatically select the main class and have it total at the bottom of the form.  You can see my Waco Futurity Form in my account.

    Page URL:

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    JotForm Developer

    Answered by mert on October 23, 2015 at 03:31 AM


    Yes, you can do this by using the "Update a Form Field Value" condition. With that, if the related check box is checked, the condition triggers and check the other check box which is defined in the condition.


    To do that, 


    You need to do this step for every option. In my example, there are 2 sub check box and I set 2 "Update a Form Field Value" condition for each of them. Below, it is can be seen:


    Also, you can preview the demo from the following link:



    If you stuck somewhere in the process or need more help, please let us know.