title: WPForms - Get Recaptcha value to perform manual control
body: <p>I'm using the '<em>wpforms_frontend_form_action</em>' filter to change the action attribute of my WPforms form.
  I also use Google recaptcha v3 on that form, but its effect is limited and i still receive spam because bots get the modified action attribute which contains my final url directly in the script to bypass control.</p>
  <p>What i'd need is to get the recaptcha value of my WPform and then perform the control myself before sending data to my final url.</p>
  <p>How to get the WPforms recaptcha value ? The '<em>wpforms[recaptcha]</em>' field is empty...</p>
  <p>EDIT : I guess the recaptcha challenge is not launched until the user submits the form, so maybe there is an other way to change the action url of my WPForm AFTER the submission and not through the '<em>wpforms_frontend_form_action</em>' filter ?</p>
  <p>Thanks for help</p>