No such functionality, sorry.
We do have a feature request for cross-column calculations (which would likely provide at least a way to accomplish what you're asking about); if you email
omnioutliner@omnigroup.com a description of what you want to do, ideally including an explanation of why / what you're trying to accomplish, that will ensure that it gets added to our bug database to help us prioritize features and determine how best to accommodate them.