diff --git a/models/marts/marts.yml b/models/marts/marts.yml
index 9af6550..6023e9d 100644
--- a/models/marts/marts.yml
+++ b/models/marts/marts.yml
@@ -41,3 +41,16 @@ models:
           description: Date
           tests:
             - not_null
+
+    - name: f_immersions
+      columns:
+        - name: cost_id
+          description: surrogate key
+          tests:
+            - not_null
+            - unique:
+                severity: warn
+        - name: dt
+          description: Date
+          tests:
+            - not_null
diff --git a/models/metrics/metrics.yml b/models/metrics/metrics.yml
index 3822599..7a081b5 100644
--- a/models/metrics/metrics.yml
+++ b/models/metrics/metrics.yml
@@ -28,6 +28,19 @@ metrics:
 
     dimensions: [traffic_grouping, traffic_source, traffic_medium, traffic_campaign, device_category, location_country]
 
+  - name: actions
+    label: 'Actions'
+    model: ref('f_tracker')
+    description: ''
+
+    calculation_method: count
+    expression: event_id
+
+    timestamp: dt
+    time_grains: [day, week, month, quarter, year]
+
+    dimensions: [traffic_grouping, traffic_source, traffic_medium, traffic_campaign, device_category, location_country]
+    
   - name: cpc
     label: 'Cost per Click'
     description: ''
@@ -39,3 +52,16 @@ metrics:
     time_grains: [day, week, month, quarter, year]
 
     dimensions: [traffic_grouping, traffic_source, traffic_medium, traffic_campaign, device_category, location_country]
+
+  - name: cpa
+    label: 'Cost per Action'
+    description: ''
+
+    calculation_method: derived
+    expression: "{{ metric('costs') }} / {{ metric('actions') }}"
+
+    timestamp: dt
+    time_grains: [day, week, month, quarter, year]
+
+    dimensions: [traffic_grouping, traffic_source, traffic_medium, traffic_campaign, device_category, location_country]
+
diff --git a/profiles.yml b/profiles.yml
index 570faa9..b17a383 100644
--- a/profiles.yml
+++ b/profiles.yml
@@ -10,7 +10,7 @@ mybi_dbt_showcase:
   
     prod:
       type: clickhouse
-      host: clickhouse
+      host: 127.0.0.1
       port: 8123
       user: default
       schema: analytics