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(Private)Answered by Charlie on August 13, 2015 at 02:56 PM
You can't dynamically generate the check box, but you can have them setup then show them based on the user input.
Here's an example form that I made: http://form.jotformpro.com/form/52245534003949.
1. Here I added First Name and Last Name as separate text boxes, I then setup a 2 check boxes with fixed options. I have "Check box (M)" for first name starting with "M" then "Check box (S)" if it starts with "S".
2. I then use conditional logic to dynamically show those check boxes.
3. Here's how I setup my rule and action.
4. Just repeat the same process for the letter "S".
Note: No need to set the check boxes to hidden, when the rule is not meant using the "Show" action, it automatically hide the field.
I hope that helps. Do let us know if you need more information on this.