It would be great to know in a Process the old value of an atribute.
For example, an Entity with an isactive attribute and is lauched a process on the update of that entity. The process will have a conditional start. Imagine that I only want to make some actions when the isActive attribute is changed from true to false.
Nowadays one way (but painfull) possible to do this is on every parts of the application (that updates that attribute) launch manually the process with an oldvalue as an input atribute for that process.