how to create new variables based on decision tree pmml

Just learning KNIME - really like it.  Making good progress but have a question. 

I would like to create new variables based on the rules that define the end nodes created by a decision tree. I used the sample workflow "RuleSetFromPMMLv3 to identify the end notes,  wrote the model out with the PMML WRITER and can read it in with the PMML READER, but don't know how to execute the PMML so it creates the new variables automatically.  Is that something that is possible?

Any suggestions greatly apprediated