Updating A SharePoint list

Trying to Update a SharePoint List Item. 

I get the ITem ID  - I assign the Task 

NWC -  Instance show - Assign a Task Start 

But it never gets processed or Runs. 

it  just says Started -but - nothing happens after that 

Note: 

       I get the Task 

       I complete the Task 

       I submit  (Form) my updates 

Nothing Happens- 

       -  -  No updates are made although it should ( UPdate the Item)