add

@@ -3,6 +3,9 @@
 # anthor: chunhua.zhang
 # anthor: chunhua.zhang
 - hosts: localhost
 - hosts: localhost
   vars_prompt:
   vars_prompt:
+    - name: "confirmation"
+      prompt: "Start to change . Please Enter YES to continue"
+      private: no
     - name: "netType"
     - name: "netType"
       prompt: "Please choose device enterpoint: 0 for Domain(api.yoho.cn) or 1 for DCDN(api-dc1-qq.yoho.cn). [0|1]"
       prompt: "Please choose device enterpoint: 0 for Domain(api.yoho.cn) or 1 for DCDN(api-dc1-qq.yoho.cn). [0|1]"
       default: 1
       default: 1
@@ -13,6 +16,12 @@
       private: no
       private: no
 
 
   tasks:
   tasks:
+
+    - name: "make sure user type YES to confirm"
+      fail:
+        msg: "user do not type YES"
+      when: confirmation != 'YES'
+      
 # query for current configration
 # query for current configration
     - name: Query for current configuration
     - name: Query for current configuration
       uri:
       uri: