How to return issues.labels which starts with a certain string in rule automation

[priyank_agrawal]

I have a rule to remove the labels fields whenever an issue is edited. I want to remove the label field only if it starts with a certain string, ex- abc.

So if I have two labels, abc-123 and pqr-234, the rule should remove the abc-123 from labels list. I have a tried a lot of different smart values in rule advance json but it ends in json error. 

How to achieve it?

[Bill Sheboy · Accepted solution]

Hi @priyank_agrawal  -- Welcome to the Atlassian Community!

There is no smart value function to remove one item from a list field yet.  The work-around I found was to use string, list, and create variable handling:

1. Add a condition to look for the value you want to remove.  If found...
2. Capture the Labels list as a string, using Join() or an iterator to make it a delimited list, and put it into a Created Variable
3. Use the string Remove() function to remove your target label, placing the result in another Created Variable
4. Use the Split() function to separate back into a list to replace the Labels value

If you instead want to update Labels with advanced editing JSON, change the above step (2) to format in the JSON syntax, and change step (4) to leave the item as a string.

Try this, and if you need more details, here is a step-by-step for how to do this with Component replacement. The same method should work for Labels.

Here is the documentation on advanced field editing with JSON, the string functions, and the list functions I used to do this:

https://support.atlassian.com/jira-software-cloud/docs/advanced-field-editing-json/

https://support.atlassian.com/jira-software-cloud/docs/smart-values-text-fields/

https://support.atlassian.com/jira-software-cloud/docs/smart-values-lists/

Best regards,

Bill