Can you try radiobutton.value != 0 ??  (supposing 0=No )

mandeep gandhi wrote... Yes we do support change event. Attaching a sample XDP with your use case. Also if you are not able to resolve the issue, then can you share the sample you created. I hope this would help https://helpx.adobe.com/livecycle/help/mobile-forms/scripting-support.html​    

jQuery uses val() API and there is no value API in jQuery. Even if this workd this would be a hack. I would like to suggest few ways - a. If the no of fields to prefill are in good in number then go with technique mentioned in "Setting Data  attribute in stringReuest" section.b In case of less field...

Are you trying to pre fill form with this data? If yes then this is independent of the metadata associated with the form. So meta data won't be prefilled on form render. What you need to do prefill, please follow https://helpx.adobe.com/aem-forms/6/prepopulate-adaptive-form-fields.html 

Can you  please elaborate?