As an author, you will have to commit the modified resources to the repository, so other team members could see your work. Only those changes committed to a specific branch will be visible to others working on that branch. Once you have re-worked the code and committed all the changes to the VCS, you can add a new revision to the review.
To add a new revision to the review:
On the Code Review Board select a required review.
Click Add Revisions, and select the required revision.
A reviewer will receive a notification that changes were introduced into the review. When a reviewer checks the author’s corrections, only the amended files that are present in the current revision range will be available for review.