       callback new KodingError \
         "Machine sharing is limited up to 10 users."
     else
-      @update $set: { users }, (err)-> callback err
+      @update $set: { users }, (err)->
+        informAccounts targets, @getAt 'uid'
+        callback err
 
 
   removeUsers: (options, callback)->

    return newUsers


  # Private Methods
  # ---------------


    for user in targets
      users = excludeUser { users, user, permanent }

    @update $set: { users }, (err)->
      informAccounts targets, @getAt 'uid'
      callback err


  shareWith: (options, callback)->
