Copy value of multiple choice custom filed

[Gediminas Kulys]

I want to copy value from select list custom field to another issue via automation. And I just cant figure it out how to do it. I tried some forum solutions with json but getting this error 

Can not deserialize instance of com.atlassian.jira.issue.fields.rest.json.beans.CustomFieldOptionJsonBean out of START_ARRAY token at [Source: N/A; line: -1, column: -1] (customfield_10104)

[Mark Segall · Accepted solution]

Hi @Gediminas Kulys and welcome to the community!

Can you please confirm what you mean by copy value?  Is it simply copying everything that was selected on the source issue to the target issue?  If so, you should not require JSON.  In your Edit Issue action, you can simply select copy from trigger issue.

[Gediminas Kulys]

Yes, all from target issue to create new ticket in another project with same info. Problem is I can't copy values from cascading select list.

[Mark Segall]

In that case, you should be able to do what I'm showing in the screenshot below: