Validation for fields within a checkbox list

Suite and Optimus Suite 5
#1

I have a form which has a checkbox, and inside this checkbox I have a list of items. I want to validate an item as not empty within the checkbox, but only if the checkbox was checked. Is there anything built into the validation for this?

Thanks.

#2

Hi

Should work. Use latest form (attached).
form.rar (62.9 KB)