%{issue.cfnnnnn}
issue?.customfield_nnnn?.map(c => c.value)
Example output
Checkbox 1,Checkbox 2
{issue.cfnnnnn.id}
10012, 10001
Comma separated list of IDs for the options available for this custom field
issue?.customfield_nnnnn?.map(c => c.value)
Read text
issue?.customfield_nnnnn?.map(c=>c.id)