Can a radio button in a payment tool be autofilled?

Can a radio button in a payment tool be autofilled? I cannot get it to work in this form. I want to use this method so I can use the coupon tool.

https://eu.jotform.com//?formID=60875893271366

Yes, that's possible. 

Example: https://eu.jotform.com/60875893271366?checkout[][id]=1007

checkout[][id] is the name of the radio button field

1007 is one of the radio button option value

You can get the radio button values when you check your form source code.

If you need further assistance, let us know.

Thank you, but I'm still not doing it right. This is what I'm using as a condition. Can you tell me what I should use?

Thank you!

https://eu.jotform.com//?formID=60875893271366

Sorry, but your approach will not work. You can't autoselect a radio button base on the selection from another field through condition.

I suggest to replace your product choices with a custom amount payment. Then pass the calculation field value to the amount field. 

Here's how it should work https://form.jotform.com/60891583262966. You can also hide the calculation field if you want (right click the field > hide field).

This method is explained on this guide https://www.jotform.com/help/275-How-to-pass-a-calculation-to-a-payment-field

Let us know should you need further assistance.

Sorry, now I'm really confused. In your first answer you said it was possible, and this thread also says it's possible. 

http://www.jotform.com/answers/696237-Auto-select-radio-button-answer-based-on-previous-selections

As I mentioned above, the reason I don't want to use the "Custom Amount Payments" is because I want to use coupon codes.

Can you explain how I can auto-select the radio button based on previous selections?

Thank you.

Unfortunately, the solution provided in the thread you linked (http://www.jotform.com/answers/696237) is not suitable for the payment tool. The solution is only possible in a radio button field, not the radio button inside the payment tool.

If you want to autoselect the radio button based on previous selection, you would need to use the Custom Amount Payment that my colleague suggested earlier. Once that is set, you can now follow the guide from this thread: http://www.jotform.com/answers/696237.

Then if you want to use coupon codes on the custom amount payment, you can simply add textbox fields for the customized coupon field.

Then add the condition for when the coupon code is filled.

Once the condition is added, update your Calculation field to subtract the total with the value form the discount.

The result from the checkout should now look like the screenshot below:

You can check out this demo where I added a coupon code to the form that my colleague shared earlier: https://form.jotform.com/60892342478969

If you need further assistance, please let us know.
Regards.