How to change custom field from text to Labels

Hi ,

As per my project requirement i have changes the custom field from text to Labels, While i am updating the values of custom filed i am getting groovy script error. Please suggest what could be the approch.

Error Stack :

java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Set
at com.atlassian.jira.issue.customfields.impl.LabelsCFType.createValue(



CustomField cfEcpId = cfManager.getCustomFieldObjectsByName("ECP ID Label").first();

cf.updateValue(fieldLayoutItem, issue, new ModifiedValue(currentValue, newValue), new DefaultIssueChangeHolder());




2 answers

0 votes

You can't just change a field from one type to another.

Do you mean you have  a label field that you are trying to copy some text into from another field?


Its not exactly changeing from one field to other , its like i am creating a new field with Lebel type and while processing through groovy script but not able to update the value .



Ah, good, that's the right way to approach it.

The problem you have is that your script is not pushing the right type of data into the label field.

A string field is a string of letters.  A label field is a collection of individual labels, each of which holds a string that is the name of the label.

In your code, the "newValue" going into the changeHolder needs to be a collection of labels.  You'll need to read out the existing labels as a collection, then take the string you want to add to them, convert it into a set of labels you add to that collection, and post that back.

Thanks Nic,

Can you help me with sample code if you have , I just want to update the custom field of Label type with certain value(Issue key).

I am not sure how to achieve this with labelmanager api or cf.updateValue method .




Thanks Nic,

Now ist working fine to me .





Fazila Ashraf Community Champion Apr 27, 2018

Hi @Adhikari Jitendra Kumar Das,

Could you please share a sample code which is working for you? I have a similar requirement..

@Adhikari Jitendra Kumar DasI am interested in getting the code for this... I'm assuming you are running it in the Script Console?


I had come up with a solution that will effectively accomplish my intent over time with this post: 

However, being able to copy the free text values over to the new label field without having to wait for user-generated events would be amazing as some of our issues may never be edited. 

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