Compare Document Creator with a document property in Workflow

 I'm trying to build this comparison and transition in a workflow:

The idea is that if the document creator (or revision creator) is the same person as the document owner (document property), then the workflow doesn't route to the document owner (redundant) but just transitions to the next step in the workflow.

I tried to do this by creating this logic in the workflow, but it doesn't recognize the term "Document Creator".  It looks like it needs a fixed email:

Does anyone know how to make something like this work?

Thanks,