I've created an approval request workflow that works fine. The workflow adds the default "status" column in the document library that includes "In Progress" and "Completed". I'd like to add a column that contains the overall approval status of a workflow; either "Approved" or "Rejected". I can do this manually with a SharePoint column and set the column programmatically from the workflow. However the user can change this value in the document library. I would like the column data to come from Nintex so that the user cannot change the value (say for example if the document is rejected and they just Edit Properties and change it to "Approved").
Can I do this?