no message

installstack.yml

 ---
 - hosts: NewServer
   become: true
+  vars:
+     pidlist: ""
   tasks:
        - import_role:
             name: install
\ No newline at end of file

roles/install/tasks/main.yml

@@ -2,11 +2,11 @@
   shell: lsof -n -i4TCP |grep -v 'ssh' | grep LISTEN | awk '{ print $2 }'
   register: pid
   
-- debug: var=pid.stdout
+- debug: pidlist=pid.stdout
 
 - name: Kill All found process
-  shell: kill var
-  when: var == ""
+  shell: kill -9 pidlist
+  when: pidlist == ""
 
 - name: Check & Recreate Stack Folder
   file: