diff --git a/grafana/README.md b/grafana/README.md
index 3a7fb24..b129b6a 100644
--- a/grafana/README.md
+++ b/grafana/README.md
@@ -67,6 +67,17 @@ module "alerting" {
 ```
 With this configuration you need to place your notification templates into `templates` folder and alert definitions in YAML format to `alerts` folder in same directoty where `main.tf`is located.
 You can example for both in [examples](./examples/) folder.
+For this example you need export your secret variables e.g. with lookup in Secret Manager.
+
+```sh
+export TF_VAR_grafana_url="<GRAFANA URL>"
+export TF_VAR_grafana_username="admin"
+export TF_VAR_grafana_password="xxxxxxx"
+export TF_VAR_google_chat_url="https://chat.googleapis.com/v1/spaces/xxxxx"
+export TF_VAR_datasource_url="https://xxxxx.stackit.cloud/instances/xxxxxx"
+export TF_VAR_datasource_username="stackit9_xxxxx"
+export TF_VAR_datasource_password="xxxxxx"
+```
 
 ## Dashboard 
 TODO