Groovy-Postfunction: How to detect, wether current transition clears resolution?

[Axel Joester]

In a workflow, we use a transition to open-status. The user can take this transition from any other status (a shared transition).

On the transition we have a scriptrunner/groovy-post-function that should set some progress-customfield to it's previous value, if, and only if, the current instance of the transition leaves from a resolved status.

I figured out how to find the previous value via ChangeHistoryManager. Simple.

But: How can the post-function detect, that the current instance of the transition leaves from a resolved status?

Background: Of course, we could just define two transitions: One from all resolved states, another one from all unresolved states. In reality, we have multiple states and multiple shared transitions and don't want to define all of them twice. 

[Axel Joester · Accepted solution]

Ah, nevermind, I found a simple solution in my case:

The transitions to done-statuses sets the progress custom field to 100%.

When transitioning to a not-done status, I set the progress field back to its previous value.

But now I only do that, if it currently is at 100%.