Workflow: How to update the element in the main list column when creating / modifying the subsite column

I have a list on my main site for parents that is for projects. In each of my sub-sites below, I have a workflow that updates a column & # 39; projectstatus & # 39; (green yellow red). I would like my list of projects on the main site to reflect these changes. I know that searches do not "work" from the subsite to the parents (just the opposite). Is there any way of doing this?