Step 1: In a Contact Form 7 form, generate a new tag for radio button.
Step 2: Enter your options. Use a pipe “|” to separate your values from your price. Any character is allowed on the left of the pipe, but only numbers are allowed on the right.
Step 3: Your radio button should have a name code. Something like radio-556. Copy that to your clipboard.
Step 4. On the PayPal tab, Paste the name code into the Price Code input box.