What is the equivalent of org.springframework.ui.Model in Spring WebFlow?

I'm developing a web application using Spring MVC and Spring WebFlow. Recently, I've realized that I have to integrate a new state to my flow. The state that I have to add is just a normal JSP page that is already developed using Spring MVC (there a standard Spring Controller behind defining the request mapping and intercepting the request parameters).

So all what I've to do is to convert the logic developed inthis Spring Controller into a Spring Helper that will be used by the flow.

My question is what will be the equivalent of org.springframework.ui.Model which I'm using to set attributes in the Spring Helper that will be used by the flow ?