Automatic Task Completion based on Proof Approval with comment screening

We would like to close out a task when proof approvals are received.  I took a look at the Fusion template for this, but there are no considerations for someone making a comment (potentially needing a revision instead of approval) but making the decision of approval.  I can read the comments through Fusion, but they are not version specific.  Is there a way to set up a filter so that Fusion will only automate closing the task if there are no comments.  If there are comments we would want a manual review and task closure.