Sure!
I have a frame(not a Human Task) where a user insert his username and his password; these information are stored in a map, called params, that I use to start the process; at the same time I store the information in the variables (that I create in the process definition) username and password. In this way I can compare the information stored in the variables with the information stored in a database (as an example, it is obvious that I did not create an external database, but I create in the ProcessTest.java class an object of type User, which I then stored in the session through ksession.insert); what I would do by the rules, is to compare the object created by me with the data that are passed to me from the outside: if they match then make a print ...