What is a good design pattern to save data from a data page into a concrete class on 7.2.2? It looks like in 7.4 and up Pega offers additional support in the form for flow shapes, flow action options, and a utility to save data page data but I'm on 7.2.2 for now.
I'm able to read my data declaratively by using the property setting "refers to a data page" and it works great. I also need to update this data. During my experimental phase of the project I've used an utility shape that calls obj-save. This works but I'll have to put this shape in a lot of places throughout my flow to handle all of the use cases. There are a lot of paths through this area of the flow and I can't just find a common place to call it once. I'd like to avoid creating more procedural code. Is there a way to do this declaratively?