set issue security based on a custom field

[Consulente Atlassian]

I am trying to do set issue security based on a custom field. I have a custom field that is called Assignment Group. It is a custom field of type Group Picker from Jira. When an issue transits from To Do to In Progress I want to put a post-function in the workflow so that the issue takes the security level equal to the value of the Group Picker. There are three security levels: level-1, level-2 and level-3. The Assignee Groups are three and they are called in the same way: level-1, level-2 and level-3. I do not know how Script Runner can copy the value of the Assignee Group field and put it in the Issue Security Level field. Can anyone help me ?

[Brant Schroeder]

@Consulente Atlassian 

I believe this has your answer https://community.atlassian.com/t5/Jira-questions/ScriptRunner-how-to-set-issue-security-level-based-on-custom/qaq-p/952081

[Deleted user]

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.MutableIssue
import com.atlassian.jira.issue.security.IssueSecurityLevelManager
import com.atlassian.jira.issue.security.IssueSecuritySchemeManager

import com.atlassian.crowd.embedded.impl.ImmutableGroup

def issueSecuritySchemeManager = ComponentAccessor.getComponent(IssueSecuritySchemeManager)
def issueSecurityLevelManager = ComponentAccessor.getComponent(IssueSecurityLevelManager)
def customFieldManager = ComponentAccessor.customFieldManager

// Change it to your Group Picker field name
def groupPicker = customFieldManager.getCustomFieldObjectsByName("Gruppo Assegnatario").first()
def group = (issue.getCustomFieldValue(groupPicker) as ArrayList<ImmutableGroup>).first()

def project = issue.getProjectObject()
def issueSecurityScheme = issueSecuritySchemeManager.getSchemeFor(project)
def securityLevelID = issueSecurityLevelManager.getIssueSecurityLevels(issueSecurityScheme.id).find { it -> 
// since the group name is equal to the security level name
it.name == group.name 
}?.id

issue.setSecurityLevelId(securityLevelID)

@Brant Schroeder  

thank you for your reply, I am making many attempts, as I said I do not know Script Runner and I am learning. With the help of many other people I was able to put this code together. Which works, in the sense that I can now write the value. But it happens that when I make the transition in the Security Level field I am left with the "previous" value and I don't understand why.