diff --git a/docs/notification-center-pro/custom-tokens/example-collection/_index.de.md b/docs/notification-center-pro/custom-tokens/example-collection/_index.de.md
index 67548b9..963d24e 100644
--- a/docs/notification-center-pro/custom-tokens/example-collection/_index.de.md
+++ b/docs/notification-center-pro/custom-tokens/example-collection/_index.de.md
@@ -24,9 +24,11 @@ Gesamttotal: ##gesamttotal##
 So könnte unsere Twig-Logik könnte dann wie folgt aussehen:
 
 ```twig
-{% set subtotal = rawTokens.byName('form_anzahl_prospekte').value * 4 %}
-{% set mwst = subtotal * 19 / 100 %}
-{% set gesamttotal = subtotal + mwst %}
+{% if rawTokens.has('form_anzahl_prospekte') %}
+    {% set subtotal = rawTokens.byName('form_anzahl_prospekte').value * 4 %}
+    {% set mwst = subtotal * 19 / 100 %}
+    {% set gesamttotal = subtotal + mwst %}
+{% endif %}
 ```
 
 Diese Logik kopieren wir nun in 3 Tokens und geben jeweils die gewünschte Variable aus:
diff --git a/docs/notification-center-pro/custom-tokens/example-collection/_index.en.md b/docs/notification-center-pro/custom-tokens/example-collection/_index.en.md
index f402cba..5122194 100644
--- a/docs/notification-center-pro/custom-tokens/example-collection/_index.en.md
+++ b/docs/notification-center-pro/custom-tokens/example-collection/_index.en.md
@@ -23,9 +23,11 @@ Total amount: ##total##
 So könnte unsere Twig-Logik könnte dann wie folgt aussehen:
 
 ```twig
-{% set subtotal = rawTokens.byName('form_number_of_brochures').value * 4 %}
-{% set tax = subtotal * 19 / 100 %}
-{% set total = subtotal + tax %}
+{% if rawTokens.has('form_anzahl_prospekte') %}
+    {% set subtotal = rawTokens.byName('form_number_of_brochures').value * 4 %}
+    {% set tax = subtotal * 19 / 100 %}
+    {% set total = subtotal + tax %}
+{% endif %}
 ```
 
 We now copy this logic into 3 tokens and output the desired variable in each case: