insert Value "alexan38" in multi user picker custom field

[MGH]

Hi,

I would like to use the "Postfunction" when creating a ticket, with precondition. i.e.
If:
1) in the CustomField "Berechtigungskategorie" of type "Select List (cascading)" the child value is equal to "Verzeichnisberechtigungen".
2) in the CustomField "Antragsteller..." of the type "User selection (single user)" value is not in the AD group "SG-Dep-FMP".
then in the CustomField-Value "Genehmigende" of Type "User Picker (multiple users)" enter Value/Username "alexan38" and update ticket.

I can run my code in the "Script Console" without error, but the value in the CustomField "Genehmigende" is missing when I open the ticket.
I would be very grateful for any help.
my whole code is here:

-----------------------------

import com.atlassian.jira.component.ComponentAccessor

import com.atlassian.jira.issue.*

import com.atlassian.jira.issue.customfields.option.Option

import com.atlassian.jira.issue.fields.CustomField

import com.atlassian.jira.issue.customfields.impl.CascadingSelectCFType

def issueManager = ComponentAccessor.getIssueManager()

def optionsManager = ComponentAccessor.optionsManager

//predefined content

def jirakey =issueManager.getIssueCount().toString()

//def jirakey = getUnderlyingIssue().getKey().toString()

//def issue = issueManager.getIssueObject(jirakey)

Issue issue = issueManager.getIssueObject("TIFOSD-500")

def customFieldManager = ComponentAccessor.getCustomFieldManager()

// Get CustomFieldsvalue

def cFGenehmigende = customFieldManager.getCustomFieldObject("customfield_13522") // Genehmigende

def cFGenehmigendeValue = cFGenehmigende.getValue(issue)

def cfAntragsteller = customFieldManager.getCustomFieldObject("customfield_15320") // AntragsstellerIn/ Fachverantwortliche(r)

def cfAntragstellerValue = cfAntragsteller.getValue(issue)

// Liste User in AD-Gruppe 'SG-Dep-FMP'

def groupManager = ComponentAccessor.groupManager

def FAMGroupUsers = groupManager.getUsersInGroup("SG-Dep-FMP")

//get saved CustomField: Berechtigungskategorie[0]

def cfBerechtigungskategorie = ComponentAccessor.getCustomFieldManager().getCustomFieldObject(15345)

if (cfBerechtigungskategorie != null) {

    Map mapValue = issue.getCustomFieldValue(cfBerechtigungskategorie) as Map

    def cfcfBerechtigungskategorieFieldValue = mapValue.get(null).toString()

    // def for Berechtigungskategorie-Optionen

    def customField = customFieldManager.getCustomFieldObjectsByName("Berechtigungskategorie")[0]

    def fieldConfig = customField.getRelevantConfig(issue)

    // Define the Option variable as a List Type

    List options = optionsManager.getOptions(fieldConfig)

    def cfBerechtigungskategorieValue = issue.getCustomFieldValue(15345)

    HashMap<String, Option> hashMapEntries = (HashMap<String, Option>) cfBerechtigungskategorieValue

    if ((cfBerechtigungskategorieValue != null) && (cfAntragstellerValue != null) && (groupManager.getUsersInGroup("SG-Dep-FMP").contains(cfAntragstellerValue) == false)) {

        Option parent = hashMapEntries.get(CascadingSelectCFType.PARENT_KEY)

        Option child = hashMapEntries.get(CascadingSelectCFType.CHILD_KEY)

        // Gehen Sie alle Optionen durch

        child.each {

            log.info("it.toString: " + it.toString())

            if (it.toString() == "Verzeichnisrechte") {

                //cFGenehmigende.setFormValue("alexan38")

                issue.setCustomFieldValue(cFGenehmigende, "alexan38")

                log.info("CFGenehmValue: " + issue.getCustomFieldValue(13522))  

            }

        }

    }

}

-----------------------------.

Best regards.
Masoud