REST API & Collection parameters issue

Hello!

I’m struggling with REST API (v2). Here is my case:

I need to pass parameters to my SQL query what uses SQL IN. I found several examples where this is explained.

In Jasper Studio (latest version), my parameter is named as ID_ARR. Param class is set to java.util.Collection (have tried List as well). Only name & class is set for parameter.

In SQL this is used like: where $X{IN, id, ID_ARR}

All works like charm when I use preview in my Jasper Studio.

Now I need to run this report via REST API request. This is URL for report:

http://localhost:8080/rest_v2/reports/Reports/TestReport.pdf?interactive...

Report will be returned just fine, BUT ID_ARR variable remains always empty and all data is returned from table, so where IN is not executed at all?

Any ideas what I’m doing wrong?

I use latest JasperStudio & Jasper Server (6.4.0)