How to put $_POST['varibale'] in value field in Contact Form 7?

Question

WordPress

Can you please tell me how to enter the value of the variable passed to this page by the Post method in the Contact Form 7 field? Something like [text fieldname "<php ​​echo $_POST['varibale'] ?>"].
Well, or how to refer to the value of a regular input when compiling a letter template, in the same Contact Form 7.
Thank you.

Answer 1

can be found in the official documentation for the plugin
contactform7.com/2015/01/10/adding-a-custom-form-tag