I am trying to create an automation that will trigger when an issue is assigned to a user. After doing some other tasks (adding a label, adding a comment) the final step is to change the sprint to the current active sprint (see photo 1 below).

Seems like an easy task but the action fails:

After reading this article I can confirm that the actor has permission to edit the Sprint field and the Sprint field exists. What am I doing wrong?
Side note: If I add the following to the advanced fields I can get the sprint to change:
```
{
"fields": {
"Sprint": "156515"
}
}
```
But I'm trying to have the "156515" be a dynamic value based on our current sprint.