Using SPD 2013 workflow to check if task is complete

Hi

I am trying to get to see if a task on a task on a task list is completed - if yes, workflow status shows a custom string if not another string.  Cannot get this right - workflow status shows suspended on Sharepoint.  Here is the code:

Stage:Check for task completion
    If Current Item:Completed equals Yes
        Set Workflow Status to This task is completed
    Else
        Set Workflow Status to This task is NOT completed
Transition to stage
    Go to End of Workflow

What am I doing wrong?