I'm trying to create a workflow that starts when a drop down on a form is set to 'submitted'. This then creates a task in the task list. When the task is completed I want to then update another field on the form to tick a checkbox to say it has been completed.
When I'm designing the workflow I cant figure out how to reference the form from the task list to update the check box. I think I need some way of specifying an ID number to identify which form in the form library I need to update.
Can anyone point me in the right direction?