JJupin: How to work with Request participants field

All attempts to modify the Request participants Service Desk field with JJupin SIL scripting is failing with error "java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Collection".

Example code:

JUser[] participants;
participants = addElement(participants, getUser("admin"));
#{Request participants} = participants;

Another attempt:

#{Request participants} = addElement(#{Request participants}, getUser("admin"));

And another:

#{Request participants} = addElement(#{Request participants}, "admin");

Am I doing something wrong, or is JJupin not capable of handling the Request participants field?

3 answers

1 accepted

Hi Thomas,


Could you please go to Custom Field Mappings and chage the Value factory to  User[] -> string[]? 

This should do the trick.





Setting it to "User[] -> string[]" worked perfectly, thank you!

Anyway, how do you like version 4.0.0 so far? We are pretty proud of it smile ...

I haven't had a chance to use any of the new features yet, but it looks very good. I expect we'll be making use of the JQL support as well as the JIRA Agile and JIRA Service Desk integrations. Possibly the mail handlers too. I can say though that the UI improvements are nice smile


give a try with string array participants:

string[] participants={};

participants = addElement(participants, getUser("admin"));
#{Request participants} = participants;


Thanks for the reply, but I get the exact same results with a string array (in fact that was what I tried in one of my first attempts).

For reference this is with JIRA Software 7.2.7, Service Desk 3.2.7 and JJupin 4.0.0

Hi Thomas,

I can't get this working when using JUser[] but using string[] instead works. Also, this may or may not be relevant to you but I noticed that if I am trying to request participants on any other transition than the create transition, then it works if I refer to the custom field directly rather than as #{..}.

In my case, I am requesting participants on a later transition and the string[] worked as soon as I reverted to using customfield_10408 = <value>


If you could share some thoughts on what could be stopping the JUSer[] from working, that'll be really great.




Hi Anupam

The accepted solution worked for me ("go to Custom Field Mappings and change the Value factory to  User[] -> string[]")

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