Hi Shane.
Sorry, but it didn't worked.
I tried this before, but noting really happened.
This radio buttons are a taxonomie (not sure if this change anything) but not neccesary the field needs to be a taxonomie, actually, and if it's easier I can try to solve my problem changing this taxonomie to a field.
(For your information. What I'm trying to achieve is two searchs in separate by tabs in the same page. So, this pre-checked field will be display none by CSS and it helps me to show different results in the two search forms. I know it's a little tricky, but it's the best workaround to solve my problem. So, that's why it's not mandatory to have the taxonomie pre-selected).
Well, not exactly.
I have two identical searchs, separate with a tab . But they are not the same. I mean, they have differents ID's and names.
I thought this could be the problem, so I deleted one of my searchs from the tabs, but the result is the same. The pre-selected radio options didn't work with one single search.
You can see it in action with your code added and no other search working in the same page hidden link
My issue is resolved now. Thank you Shane!
I solved it with a "select option" and "insert values manually " selecting the field I need in each search form.
Something like this
1) This one for Empresas
[wpv-control-postmeta field="wpcf-tipo-de-empresa" source="custom" url_param="wpv-wpcf-tipo-de-empresa" values="Empresa" display_values="Empresa"]