Create select list field with values from multiple issue picker field

Question

Hi everyone.

In one of Jira projects we have multiple issue picker field where normally 3-4 issues are selected. 
Currently we need to configure select list field where only one issue from the list above can be picked. List of issues should be taken from current issue.

It's clear that I can return list of issues via issue.getCustomFieldValue(xxxxx) string and I assume that Custom Picker scripted field is required for that but I cannot figure out how it can be implemented as select list field.

Any help appreciated.

Thanks in advance,

Michael

Michael Okhotin · Accepted Answer

Found solution on my own :)