Auto assign based on CF value

Question

This have been discussed multiple time and I reviewed many answers but could not make my script to work....

I'm using this in the "behavior" to Assign to a specific user per the team the reporter selected on "issue created".

I'm getting the attached error below.

any help is much appreciated.

import com.atlassian.jira.issue.Issue
import com.atlassian.jira.issue.link.IssueLink
import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.web.ExecutingHttpRequest
import com.atlassian.jira.issue.UpdateIssueRequest;
import com.atlassian.jira.user.ApplicationUser;
import com.atlassian.jira.issue.MutableIssue;
import com.atlassian.jira.event.type.EventDispatchOption
import com.atlassian.jira.user.ApplicationUser
import com.atlassian.jira.user.util.UserUtil
import com.onresolve.jira.groovy.user.FormField

//point to the CF navigator Team and get the value
FormField team = getFieldById("customfield_14400")
def team_val = team.getValue().toString()

def issueManager = ComponentAccessor.getIssueManager()
def mIssue =

switch (team_val){
 case "Data Center Ops": 
 mIssue.setAssignee("x")

break;

case "Data Traffic Engineering & Operations":
 mIssue.setAssignee("y")

break;

case "Site Reliability Engineering & Storage Engineering":
 mIssue.setAssignee("z")

break;

case "Sys Ops":
 mIssue.setAssignee("a")

break;

case "Site Reliability Tools":
 mIssue.setAssignee("b")

break;

}

Ronen Erlich · Accepted Answer

I was able to fix it myself (Yay)

instead of behavior I used post function script (my own script):

import com.atlassian.jira.issue.Issue
import com.atlassian.jira.issue.link.IssueLink
import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.web.ExecutingHttpRequest
import com.atlassian.jira.issue.UpdateIssueRequest;
import com.atlassian.jira.user.ApplicationUser;
import com.atlassian.jira.issue.MutableIssue;
import com.atlassian.jira.event.type.EventDispatchOption
import com.atlassian.jira.user.ApplicationUser
import com.atlassian.jira.user.util.UserUtil
import com.onresolve.jira.groovy.user.FormField

//point to the CF navigator Team and get the value
def issueManager = ComponentAccessor.getIssueManager()
def customFieldManager = ComponentAccessor.getCustomFieldManager()
def team = customFieldManager.getCustomFieldObject("customfield_14400")
def team_value = issue.getCustomFieldValue(team)

def mIssue = issueManager.getIssueObject(issue.id)

switch (team_value){
 case "Data Center Ops": 
 mIssue.setAssigneeId("x")

break;

case "Data Traffic Engineering & Operations":
 mIssue.setAssigneeId("y")

break;

case "Site Reliability Engineering & Storage Engineering":
 mIssue.setAssigneeId("z")

break;

case "Sys Ops":
 mIssue.setAssigneeId("a")

break;

case "Site Reliability Tools":
 mIssue.setAssigneeId("b")

break;

}