diff --git a/devices.csv b/devices.csv
index ee579f4..9c75a09 100644
--- a/devices.csv
+++ b/devices.csv
@@ -1,7 +1,7 @@
 host,os,ansible_user,ansible_password,ansible_become_pass,site,groups
-nxos101,nxos,ansible_user,ansible_password,ansible_become_pass,my_lab,red blue
-nxos102,nxos,ansible_user,ansible_password,ansible_become_pass,my_lab,blue yellow
-nxos103,nxos,ansible_user,ansible_password,ansible_become_pass,my_lab,red blue
-nxos104,nxos,ansible_user,ansible_password,ansible_become_pass,my_lab,blue yellow
-eos10[1:4],eos,ansible_user,ansible_password,ansible_become_pass,my_lab,orange red
-vyos10[1:4],vyos,ansible_user,ansible_password,ansible_become_pass,my_lab,orange red
\ No newline at end of file
+nxos101,nxos,vars:ansible_user,vars:ansible_password,vars:ansible_become_pass,my_lab,red blue
+nxos102,nxos,vars:ansible_user,vars:ansible_password,vars:ansible_become_pass,my_lab,blue yellow
+nxos103,nxos,vars:ansible_user,vars:ansible_password,vars:ansible_become_pass,my_lab,red blue
+nxos104,nxos,vars:ansible_user,vars:ansible_password,vars:ansible_become_pass,my_lab,blue yellow
+eos10[1:4],eos,vars:ansible_user,vars:ansible_password,vars:ansible_become_pass,my_lab,orange red
+vyos10[1:4],vyos,vars:ansible_user,vars:ansible_password,vars:ansible_become_pass,my_lab,orange red
\ No newline at end of file
diff --git a/nmake_inventory_csv.yaml b/nmake_inventory_csv.yaml
index 33a4282..ea71b84 100644
--- a/nmake_inventory_csv.yaml
+++ b/nmake_inventory_csv.yaml
@@ -6,5 +6,12 @@ keyed_groups:
   - key: site
     prefix: site
   - key: ansible_network_os
-    prefix: ""
-    separator: ""
\ No newline at end of file
+    prefix: group
+
+column_replace:
+  os: ansible_network_os
+
+vars:
+  ansible_user: omit
+  ansible_password: "{{omit}}"
+  ansible_become_pass: "omit"
\ No newline at end of file