diff --git a/content/antora.yml b/content/antora.yml
index 21378d5..ac9042c 100644
--- a/content/antora.yml
+++ b/content/antora.yml
@@ -12,6 +12,7 @@ asciidoc:
     page-pagination: true
     my_var: "foo"
     guid: my-guid
+    user: userx
     page-links:
     - url: https://redhat.com
       text: Red Hat
diff --git a/content/modules/ROOT/pages/exercise12-guided.adoc b/content/modules/ROOT/pages/exercise12-guided.adoc
index c1f66b6..2a12a63 100644
--- a/content/modules/ROOT/pages/exercise12-guided.adoc
+++ b/content/modules/ROOT/pages/exercise12-guided.adoc
@@ -79,8 +79,9 @@ NOTE:  Do not forget to change the IP to value defined on step 5.
 virtctl ssh lab-user@exercise12-a -c 'curl --silent --connect-timeout 3 http://IP'
 ----
 
+[source,subs="attributes"]
 ----
-Warning: Permanently added 'vmi/exercise12-a.namespace-user5' (ED25519) to the list of known hosts.
+Warning: Permanently added 'vmi/exercise12-a.namespace-{user}' (ED25519) to the list of known hosts.
 exit status 28
 ----
 
@@ -101,6 +102,7 @@ oc get multi-networkpolicies.k8s.cni.cncf.io
 oc get multi-networkpolicies.k8s.cni.cncf.io deny-by-default -o yaml
 ----
 
+[source,subs="attributes"]
 ----
 apiVersion: k8s.cni.cncf.io/v1beta1
 kind: MultiNetworkPolicy
@@ -149,6 +151,7 @@ spec:
 [start=10]
 10. In this network-policy there's an error on label used on `podSelector`. The correct label is `vm.kubevirt.io/name: exercise12-a`
 
+[source,subs="attributes"]
 ----
 apiVersion: k8s.cni.cncf.io/v1beta1
 kind: MultiNetworkPolicy
@@ -193,3 +196,5 @@ virtctl ssh lab-user@exercise12-a -c 'curl --silent --connect-timeout 3 http://I
 
 
 
+
+