edit user input data contact form 7

I have created a form that posts user input to an API, in my function I have multiple Posted Data entries that take the value from my user input. In my $body variable I have set it to receive the API response after my API is sent, but now I want this response to be shown in my user inputs $body = $posted_data['dynamichidden-458'];

• I have $body that receives the API response
• in $body = $posted_data['dynamichidden-458']; I want my API response to take over the value of the dynamichidden-458 field.
• I want it like this so that when viewing the user inputs via a DOM listener I can capture the values of my users along with their API response.

My Question How do I set the value of Dynamichidden-458 to my $body API response.

function Kiri_cf7_api_sender( $contact_form ) {

    if ( $contact_form-title === 'Quote_form' ) {
        $submission = WPCF7_Submission::get_instance();

        if ( $submission ) {
            $posted_data = $submission-get_posted_data();

            $name    = $posted_data['your-name'];
            $surname = $posted_data['your-name2'];
            $phone   = $posted_data['tel-922'];
            $urltest = $posted_data['dynamichidden-739'];
            $posted_data['dynamichidden-458'] = $body;

            if ( strpos( $urltest, '?phone' ) !== false ) {
                $url = 'api string';

            } elseif ( strpos( $urltest, '?email' ) !== false ) {
                $url = 'api string';

            } else {
                $url = 'api string';

                $response = wp_remote_post( $url );
                $body     = wp_remote_retrieve_body( $response );

                ob_start();                     // start buffer capture

                var_dump( $name );
                var_dump( $surname );
                var_dump( $phone );
                var_dump( $url );
                var_dump( $urltest );
                var_dump( $body );

                $contents = ob_get_contents();  // put the buffer into a variable
                ob_end_clean();                 // end capture
                error_log( $contents );
                return;
                print_r( $submission );

            }
        }
    }
}```