Auto Create Sub Task with set Assignee to Components leaders

[Roy Lee]

1. I have field to select components and setup the components leaders in project
2. I use the "Create issues and subtasks by JWT" in Post Functions to auto create sub-task
3. I want to set Assignee to the sub-task that use Components leaders,so I use Set Fields to add Assignee like this: Value type: Field in current issue Source field in current issue: Components leaders - [Multi-user]

4.In the workflow,when auto create sub-task that got the information like this:

Error occurred while creating issue. This could be due to a plugin being incompatible with this version of JIRA. For more details please consult the logs, and see: http://confluence.atlassian.com/x/3McB java.util.ArrayList cannot be cast to com.atlassian.jira.user.ApplicationUser It seems that you have tried to perform an illegal workflow operation. If you think this message is wrong, please contact your JIRA administrators.

ps: my JIRA Core Version is 7.3.3

[Fidel Castro Armario]

Hi @atp_roy,

If you are using the post-function in Create Issue transition, you should move it AFTER transition "Creates the issue originally".