Is it possible to assign an issue back to the assignee who moved it up the workflow

[Jacob Issac]

When moving an issue back a step in a workflow, is it possible to automatically assign the issue back to the assignee who moved it up the workflow?

For example, Alice from Design sends an issue to "Review". All issues sent to "Review" get auto-assigned to Bob. Bob reviews the issue and sends it back to Design. Is there a way to auto-assign the issue back to the one who sent it to Bob, in this case Alice? 

[Jack Brickey · Accepted solution]

The only way I know accomplishing this would be to have a separate user picker field and record previous assignee. In that way you could copy that field to the assignee Based upon the transition. However I think this gets quite messy even when using automation 

[Jacob Issac]

Thanks Jack. It works.

I created an automation to assign user roles when an issue is created. I then used post-functions on the transitions (rather than automations, which are slower) to switch between roles, using the copy field function.