s.widget or it will only work on one screen

awesome/background_widget.lua

@@ -39,12 +39,14 @@ end
 
 function update_background_widget(s)
 
+    naughty.notify({text="test"})
+
     local margin = 25
 
     awful.spawn.easy_async_with_shell(":", function()
 
-        if widget ~= nil then
-            widget:remove()
+        if s.widget ~= nil then
+            s.widget:remove()
         end
 
         local f = io.open(todo_path, "rb")
@@ -84,7 +86,7 @@ function update_background_widget(s)
 
             background_widget:struts({left=0, right=0, top=0, bottom=0})
 
-            widget = background_widget
+            s.widget = background_widget
 
         end