greenhopperAsJSON fails to get first entry in a list of greenhopper values

[Demolag]

We lately updated the confiform extension on our datacenter to 3.19.11, and some of our IFTTTs stopped working.

In order to get last ID from sprint customfield from a jira epic (for new issue creation), we used the following expression:

[entry.epic.customfield_<n>.greenhopperAsJSON.get().id]

which gave us the last ID to use when creating a new issue under that epic.

Now, after updating the extension, that expression started returning an empty array ([]).

I've tried to play abit with the expression, and found out that the greenhopperAsJSON gives us a broken result. For example, for the following fields:

a = 

["com.atlassian.greenhopper.service.sprint.Sprint@00000001[id=10001,rapidViewId=32500,state=CLOSED,name=Sprint - Sep 25,startDate=2025-09-01T02:52:00.000-05:00,endDate=2025-09-30T02:52:00.000-05:00,completeDate=2025-10-05T03:29:23.901-05:00,activatedDate=2025-09-08T03:27:17.605-05:00,sequence=1,goal=,synced=false,autoStartStop=false,incompleteIssuesDestinationId=]","com.atlassian.greenhopper.service.sprint.Sprint@00000002[id=10002,rapidViewId=32500,state=CLOSED,name=Sprint - Oct 25,startDate=2025-10-05T03:31:00.000-05:00,endDate=2025-10-31T04:31:00.000-05:00,completeDate=2025-11-02T03:29:08.648-06:00,activatedDate=2025-10-05T03:31:38.905-05:00,sequence=2,goal=,synced=false,autoStartStop=false,incompleteIssuesDestinationId=]","com.atlassian.greenhopper.service.sprint.Sprint@00000003[id=10003,rapidViewId=32500,state=CLOSED,name=Sprint - Nov 25,startDate=2025-11-01T10:26:00.000-05:00,endDate=2025-11-30T09:26:00.000-06:00,completeDate=2025-12-01T06:11:48.540-06:00,activatedDate=2025-11-02T03:31:08.053-06:00,sequence=3,goal=MX RTM,synced=false,autoStartStop=false,incompleteIssuesDestinationId=]","com.atlassian.greenhopper.service.sprint.Sprint@00000004[id=10004,rapidViewId=32500,state=CLOSED,name=Sprint - Dec 25,startDate=2025-12-01T06:35:00.000-06:00,endDate=2025-12-31T06:35:00.000-06:00,completeDate=2026-01-04T10:36:11.549-06:00,activatedDate=2025-12-01T06:13:44.309-06:00,sequence=4,goal=,synced=false,autoStartStop=false,incompleteIssuesDestinationId=]","com.atlassian.greenhopper.service.sprint.Sprint@00000005[id=10005,rapidViewId=32500,state=ACTIVE,name=Sprint - Jan 26,startDate=2026-01-01T12:07:00.000-06:00,endDate=2026-01-31T12:07:00.000-06:00,completeDate=,activatedDate=2026-01-04T10:37:54.547-06:00,sequence=5,goal=,synced=false,autoStartStop=false,incompleteIssuesDestinationId=]"]

the following expression a.greenhopperAsJSON.id get us ", 10002, 10003, 10004, 10005"

Is this a known issue, or am I using the virtual function wrong?
If I am using it wrong, how can I get the results I need as explained above?

[Alex Medved _ConfiForms_]

Honestly, I am quite amazed that it is like 10+ years later and still this issue is not fixed in the Jira REST APIs, and someone needs to rely on the function we have implemented to deal with this nonsense.

Anyways... What do you want to get out of that data?