Setting Field Based On Another Field

I am trying to set a field based on the value of another field in the same module. I've set up a Business Rule that shows the mapping of one field to the value that the other field should have. Then I have a simple Business Process that evaluates the Business Rule and sets the other field. Is this be best way to accomplish this? Are there other approaches?

Here is the Business Rule I'm using to test:

Here is the Business Process I wrote to evaluate the business rule Condistion / set the field Conclusion. I believe the Return Value is not used here. 

Thanks for any feedback on this. VO