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What is the null value for user pickers?


I react on a user picker in my behaviour plugin (Initializer) and need to check wether it is a user selected -> hide another customfield123 or no user selected (initially) -> hide customfield123:

if (userpicker == null)

   set CustomField123 hidden (true)


   set CustomField123 hidden (false)

Seems like (userpicker == null) doesn't work or still returns some value, because my customfield is always shown altough there is no user select. If if I use (!userpicker) it still has no effect.

Also following has no effect:

if (userpicker)

   set customfield123 hidden (false)


   set customfield123 hidden (true)


1 answer

1 accepted

0 votes
Answer accepted
Leonard Chew Community Leader Feb 05, 2020

The answer is:

if (userPickerFieldValue) 

You are probably missing something before. Here is a code snippet that can be executed in the script console:

  • Replace issueKey "ENT-191" with a valid issue of yours
  • Replace "MyUserPickerField" with the fieldname of your user picker field


import org.apache.log4j.Level

import com.atlassian.jira.component.ComponentAccessor

def issueKey = "ENT-191"
def issueManager = ComponentAccessor.getIssueManager()
def issue = issueManager.getIssueObject(issueKey)

def customFieldManager = ComponentAccessor.getCustomFieldManager()
def userPickerField = customFieldManager.getCustomFieldObjectsByName("MyUserPickerField")[0]
def userPickerFieldValue = issue.getCustomFieldValue(userPickerField)
if (userPickerFieldValue) {
log.debug('Users in Field: ' + userPickerFieldValue)
} else {
log.debug('No users in Userpicker Field')

Thanks, I already found the mistake but it was as u said, i forgot the ".getValue()" at the end.

Following works now:

String userpicker = getFieldByName("userpicker").getValue();

if ( userpicker == null || userpicker.isEmpty() ) {


} else {



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