How does one obtain the handle to an issue being accessed in a Behaviour initialiser?

[Luke Galardi]

Hi, 

I have a number of select list (dropdown) fields on my jira form, some of which hold over 500 values.  

I have had success populating these fields from an external source using groovy script in the script console and within the field behaviour.  The issues I encounter are this:

1. As a new issue is created, I want to populate these dropdowns if they have not been populated.  However, I am struggling to find the methods needed to get a handle to the issue being created.  I am using Adaptavist Behaviours and would like this behaviour to execute conditionally each time a new issue is created.  How does one get hold of an issue not yet persisted?

2.  The initialiser appears to execute multiple times when creating an issue.  Is there a suggested alternative location or time in the process for such a script to be contained?

Thanks in advance for any advice,

Luke

[Luke Galardi]

I think there may be clues to what I need to do based on this post.   https://community.atlassian.com/t5/Adaptavist-questions/ScriptRunner-Behaviours-how-to-get-information-of-an-issue-when/qaq-p/625146, 

The suggestion would be to use the underlyingIssue object, as it is representative of an issue which is not yet persisted.  Does this sound feasible?