I'm trying to created an order form where a radio button is already checked based on the URL of the form. I've used the query string option which I've found at the documentation http://www.gravityhelp.com/documentation/page/Allow_field_to_be_populated_dynamically
This does work on a regular text field but not for radio buttons and drop down fields. I've setup the fields all in the same way with the same parameter but only the textfield is prefilled. What am I doing wrong?
A demo can be seen here http://friswebdesign.nl/bestellen-v2/?package=regular Where all fields should be prefilled or pre-selected with the value of 'Regular'