Issue picker field

[mgorokhova]

Hello!

We use issue picker field from Script Runner Plugin: https://scriptrunner.adaptavist.com/latest/jira/script-fields/issue-picker.html .
I wanted to create sub-task using post-function “Create issues and subtasks Function for this transition”. In parent issue I have multi-select issue picker field - “systems” and in sub-task it’s single-select field - “system“. I wanted create sub-task for every value from parent issue and set value for every system in sub-tasks. But I cant' update issue-picker field. In field “Issues to be created:” I get issue list: issueKeysToIssueList(%{15103}). And I want use every issue to update field in created sub-task using “Set fields:”. But I can’t use issue list:

Is it any way to use issue list to update issue picker field?

I use Workflow Toolbox ver. 2.9.0