diff --git a/labs/techlib-vxlan-domain-a/README.md b/labs/techlib-vxlan-domain-a/README.md
index bd7a113..111e638 100644
--- a/labs/techlib-vxlan-domain-a/README.md
+++ b/labs/techlib-vxlan-domain-a/README.md
@@ -10,7 +10,7 @@ This lab is tested for:
 
 ## Interactive Lab Toplogy
 
-[Lab Topology](https://{{$CODESPACE_NAME}}-8080.{{$GITHUB_CODESPACES_PORT_FORWARDING_DOMAIN}}/graphite)
+[Lab Topology](https://{{gh.codespace_name}}-8080.{{gh.github_codespaces_port_forwarding_domain}}/graphite)
 
 To inspect the lab details use `make inspect` shortcut. This will list the host names and management addresses for all lab devices.
 To connect to any device use: