How to set default value for custom field only on Create screen?

Question

I'm trying to use Behaviours plugin to set default value for some custom fields when create issue.

I created Behaviour and added script

import com.atlassian.jira.component.ComponentAccessor
def tasksFld = getFieldByName("Tasks")
def customFieldManager = ComponentAccessor.getCustomFieldManager()
def customField = customFieldManager.getCustomFieldObject(tasksFld.getFieldId())
def defaultValue = """[Tasks|https://]""".replaceAll(/ /, '')

if (getFieldScreen().name == "RM CreateScreen 2.0") {
tasksFld.setFormValue(defaultValue)
}

but I did not get needed result - seems like condition

getFieldScreen().name == "RM CreateScreen 2.0"

never works. It does not put value to field when issue created and screen "RM CreateScreen 2.0" is used.
Am I doing something wrong?
Maybe there is another method to restrict behaviours only for create issue operation? Or don’t overwrite the custom field if it already exists?

Elena Oleksenko · Accepted Answer

resolved with

if (getAction()?.id != 1) {
 return // not the initial action, so don't set default values
}