url generation to pre fill custom product text field

Hi,

I am wondering if it is possible to generate an url to pre-fill a custom product text field in the same way that it is possible to pre-select a WooCommerce attribute e.g.

https://yourdomain.com/?add-to-cart=123&variation_id=117&attribute_size=Small&attribute_color=Black

So it would work like:

https://yourdomain.com/shop/your-product/?attribute_support-length=Full+Year&custom_text_field=Name+of+Person

with the custom text field prefilled with the name of person??

Thanks for your great plugin,
éamonn