diff --git a/session_dialog.php b/session_dialog.php
index 8e74fcf..df5a5fd 100644
--- a/session_dialog.php
+++ b/session_dialog.php
@@ -31,17 +31,20 @@ function modal_styles()
 
 function show_modal()
 {
-    ?>
-    <script id="postcode_modal">
+    echo <<<'HTML'
+    <script id="postcode_modal_open">
           const postcodeModal = document.querySelector("#postcode_modal");
           postcodeModal.showModal();
         </script>
-    <?php
+    HTML;
 }
 
 function send_postcode_data()
 {
-    ?>
+    $URL = get_rest_url(null, "postcode-modal/v1/submit");
+    $nonce = wp_create_nonce("wp_rest");
+
+    echo <<<HTML
     <script type="module">
         const postcodeModal = document.querySelector("#postcode_modal");
         const modalForm = document.querySelector("#postcode_modal_form");
@@ -74,17 +77,13 @@ function send_postcode_data()
             const payload = Object.fromEntries(formData.entries());
 
             try {
-                const resp = await fetch('<?php echo get_rest_url(
-                    null,
-                    "postcode-modal/v1/submit",
-                ); ?>', {
+                const resp = await fetch('{$URL}', {
                     method: 'POST',
                     credentials: 'same-origin',
+
                     headers: {
                         'Content-Type': 'application/json',
-                        'X-WP-Nonce': '<?php echo wp_create_nonce(
-                            "wp_rest",
-                        ); ?>'
+                        'X-WP-Nonce': '{$nonce}'
                     },
                     body: JSON.stringify(payload)
                 });
@@ -108,13 +107,11 @@ function send_postcode_data()
                         userErrorMessage = "Adres is niet gevonden.";
                     }
                     else if (errorCode === "HUISNUMMER_AMBIGUOUS") {
-                        // Deze komt ALLEEN nog hier als PHP géén 'platte' match kon vinden.
-                        // Dat betekent dat de gebruiker verplicht een toevoeging moet geven (bijv. alleen 15A bestaat).
                         const suggestions = data.suggestions || [];
-                        if (suggestions.length > 0) {
-                            userErrorMessage = `Meerdere opties: ${suggestions.join(", ")}. Voeg een toevoeging toe.`;
+                        if (suggestions.length > 0) { 
+                          userErrorMessage = `Meerdere opties: \${suggestions.join(", ")}. Voeg een toevoeging toe.`;
                         } else {
-                            userErrorMessage = "Huisnummertoevoeging is verplicht.";
+                          userErrorMessage = "Huisnummertoevoeging is verplicht.";
                         }
                     }
                     else if (errorCode === "CURL_ERROR" || errorCode === "JSON_ERROR") {
@@ -131,7 +128,6 @@ function send_postcode_data()
                 }
 
             } catch (err) {
-                console.error("Fetch Failed:", err);
                 sndBtn.disabled = false;
                 sndBtnLdr.style.opacity = "0";
                 sndBtnTxt.style.opacity = "1";
@@ -139,12 +135,12 @@ function send_postcode_data()
             }
         });
     </script>
-    <?php
+    HTML;
 }
 
 function render_dialog_html()
 {
-    ?>
+    echo <<<'HTML'
     <dialog id="postcode_modal" class="postcode_modal" closedby="none">
         <h2>Vul je postcode en huisnummer in.</h2>
         <p>Onze prijzen zijn afhankelijk van de regio. Vul daarom de postcode en het huisnummer in om de exacte prijzen te bekijken.</p>
@@ -186,7 +182,7 @@ function render_dialog_html()
         </form>
         <div class="error_message_modal_postcode" id="error_message_modal_postcode" aria-live="polite"></div>
     </dialog>
-    <?php
+    HTML; 
 }
 
 function has_postcode()
@@ -409,62 +405,63 @@ function modify_checkout_with_js()
     );
     $address =
         $_SESSION["straatnaam"] . " " . strtoupper($_SESSION["huisnummer"]);
-    // Output the JavaScript
-    ?>
-        <script type="text/javascript" id="fill_address_fields">
-          jQuery(document).ready(function($) {
-              fillCheckoutFields();
-              $(document.body).on('updated_checkout', fillCheckoutFields);
-          });
 
-          function fillCheckoutFields() {
-            if (typeof wp !== 'undefined' && wp.data && wp.data.dispatch) {
-              const store = 'wc/store/cart';
+    echo <<<HTML
+    <script type="text/javascript" id="fill_address_fields">
+      jQuery(document).ready(function(\$) {
+        fillCheckoutFields();
+        \$(document.body).on('updated_checkout', fillCheckoutFields);
+      });
 
-              wp.data.dispatch(store).setShippingAddress({
-                  first_name: '',
-                  last_name: '',
-                  address_1: '<?php echo esc_js($address); ?>',
-                  address_2: '',
-                  city: '<?php echo esc_js($woonplaats); ?>',
-                  state: '',
-                  postcode: '<?php echo esc_js($postcode); ?>',
-                  country: 'NL',
-                  phone: '',
-                  email: ''
-              });
+      function fillCheckoutFields() {
+        if (typeof wp !== 'undefined' && wp.data && wp.data.dispatch) {
+          const store = 'wc/store/cart';
 
-              //make fields READONLY and ppstcode reset.
-              setTimeout(() => {
-                // make prefilled fiields readonly.
-                $('#shipping-postcode, #shipping-city, #shipping-address_1')
-                  .prop('readonly', true)
-                  .css('background', '#f9f9f9');
+          wp.data.dispatch(store).setShippingAddress({
+          first_name: '',
+          last_name: '',
+          address_1: '{$address}',
+          address_2: '',
+          city: '{$woonplaats}',
+          state: '',
+          postcode: '{$postcode}',
+          country: 'NL',
+          phone: '',
+          email: ''
+      });
 
-                  // create postcode reset button
-                  const div = document.createElement("div");
-                  const script = document.createElement('script');
-                  div.setAttribute("class", "postcode-reset")
-                  div.innerHTML = `
-                    <a href="#" class="reset-postcode-show-comfirm" >Reset postcode.</a>
-                    <span class="bevestiging"> Deze handeling leegt ook de winkelwagen. Weet je het zeker?
-                      <a href="#" class="accept">&nbsp;&nbsp;JA&nbsp;</a>/<a href="#" class="decline">&nbsp;nee&nbsp;&nbsp;</a>
-                    </span> `;
-                  div.style.width = "100%";
-                  document.querySelector(".wc-block-components-address-form__city").after(div);
-              }, 500);
+      //make fields READONLY and ppstcode reset.
+      setTimeout(() => {
+        // make prefilled fiields readonly.
+        \$('#shipping-postcode, #shipping-city, #shipping-address_1')
+          .prop('readonly', true)
+          .css('background', '#f9f9f9');
 
+          // create postcode reset button
+          const div = document.createElement("div");
+          div.setAttribute("class", "postcode-reset")
+          div.innerHTML = `
+            <a href="#" class="reset-postcode-show-comfirm" >Reset postcode.</a>
+            <span class="bevestiging"> Deze handeling leegt ook de winkelwagen. Weet je het zeker?
+              <a href="#" class="accept">&nbsp;&nbsp;JA&nbsp;</a>/<a href="#" class="decline">&nbsp;nee&nbsp;&nbsp;</a>
+            </span> `;
+          div.style.width = "100%";
+          document.querySelector(".wc-block-components-address-form__city").after(div);
+          }, 500);
 
-
-              jQuery(document.body).trigger('update_checkout');
-          } else {
-              console.error('WooCommerce Blocks API is niet beschikbaar');
-          }
-       }
-     </script>
-     <?php
+          jQuery(document.body).trigger('update_checkout');
+        } else {
+          console.error('WooCommerce Blocks API is niet beschikbaar');
+        }
+    }
+    </script>
+    HTML;
 }
 
+
+
+
+ 
 function load_assets_reset_postcode_on_checkout()
 {
     if (is_checkout() && !is_wc_endpoint_url()) {
