Hi Aleksey Bykov ,
Is it possible in Activiti by using JavaScript to calculate the number of participants in these groups?..
You can use IdentityService's user query to get the number of participants of a group.
identityService.createUserQuery().memberOfGroup(group.getId()).list().size()
I ran a unit test for this and it works.
Hope this helps,
Thanks,
Thong Huynh
