Unable to close sprint - says subtasks not closed despite marked as done

[Mahesh Kannan Thangavelu]

Unable to close sprint - says subtasks not closed despite marked as done. I have added a subtask workflow (different from main tasks/ stories workflow) and had give the resolution as done for my subtasks. I can also see the ticket in each of the subtasks as resolved. So, I am not sure why jira dowsn't recognize that the subtasks are completed. Any help is appreciated.

[Nic Brough -Adaptavist-]

Are the "done" status for the sub-tasks in the last column of the board?

[mthangavelu]

Hmm not sure what you mean by last column of the board. Sorry I am a newbie. 
done is the final status in workflow for sub tasks. 

[Nic Brough -Adaptavist-]

I'm not sure how else to say "the last column on the board".  Literally, look at the board, it has several columns, what is the last one?  (Ok, one quirk, you need to be reading left to right)

[mthangavelu]

Do you mean the swim lanes  ? 

[Mahesh Kannan Thangavelu]

Now I understood it. Thanks for the help. I didn't update the 'Done' status of subtask in Swimlane.