WordPress+CF7 – výsledek shortcodu – v mailu OK, jinde špatně

Ahoj, pokusam sa zobrazit vysledok vlastneho shortcodu na stranke anebo v samotne forme CF7, ale vzdy sa zobrazi vysledok shortcodu pred zadanim udajov do CF7, ale do mailu pride spravny vysledok po zadani udajov do CF7.

<?php

add_filter( 'wpcf7_form_elements', 'do_shortcode' );

function cena_cf7_func() {
        $wpcf7 = WPCF7_ContactForm::get_current();
        $wpcf7data = WPCF7_Submission::get_instance();
        if ($wpcf7data) {
                $formData = $wpcf7data->get_posted_data();
        }

    $pocetStran = $formData['pocetStran'];
    $rokVyrobenia = $formData['rokVyrobenia'];
    $pocetkusov = $formData['pocetkusov'];

if ($pocetkusov === "žiadny" || $pocetkusov === "1 kus") {
  $zlava = 0;
} elseif ($pocetkusov === "2 kusy" or $pocetkusov === "3 kusy") {
  $zlava = -5;
} else {
  $zlava = -10;
}

$vekVyrobku = date("Y") - $rokVyrobenia;

if ($vekVyrobku >= "51") {
    if ($pocetStran <= "59") {
      $sadzba = "92";
  } elseif ($pocetStran >= "60" and $pocetStran <= "69") {
      $sadzba = "95";
  } elseif ($pocetStran >= "70" and $pocetStran <= "79") {
      $sadzba = "98";
  } elseif ($pocetStran >= "80" and $pocetStran <= "89") {
      $sadzba = "103";
  } elseif ($pocetStran >= "90" and $pocetStran <= "99") {
      $sadzba = "107";
  } elseif ($pocetStran >= "100" and $pocetStran <= "120") {
      $sadzba = "112";
  } elseif ($pocetStran >= "121" and $pocetStran <= "140") {
      $sadzba = "119";
  } elseif ($pocetStran >= "141") {
      $sadzba = "125";
  }
  }

$jedno = ($zlava) / 100;
$jedno_procento = 1 + ($jedno);
$cenaVyrobku = $sadzba * $jedno_procento;
$vysledna_cenaVyrobku = number_format($cenaVyrobku, 2);

        return "Výsledná cena: " . "$vysledna_cenaVyrobku" . " €";
}
add_shortcode('cena', 'pzp_cf7_func');

add_filter('wpcf7_mail_components', 'do_shortcode_mail', 10, 3);
function do_shortcode_mail( $components, $contactForm, $mailComponent ){
  if( isset($components['body']) ){
    $components['body'] = do_shortcode($components['body']);
  }
  return $components;
}

Do formy, na stranku i do mailu zadavam [cena]
Co je treba zmenit? Alebo dodat? Dekujem.