Assigning Issue to a user based on value of a custom field

[Bhupesh Nagda]

I am using Script Runner plugin and running a custom script with below code to assign issue to a user based on value of a custom field. Custom field is a single select drop-down with 5 options. I am able to capture the value and condition it but I am unable to assign the issue to user using this script. 

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.Issue
import com.atlassian.jira.issue.CustomFieldManager
import com.atlassian.jira.issue.fields.CustomField
import com.atlassian.jira.ComponentManager
CustomFieldManager customFieldManager = ComponentManager.getInstance().getCustomFieldManager();
CustomField cf = customFieldManager.getCustomFieldObject(11849);
String value = issue.getCustomFieldValue(cf).toString()
System.out.println("Custom field Value: "+ value)
if(value == 'Production')
{
String userName="abc"
def userManager = ComponentAccessor.getUserManager()
def user = userManager.getUserObject(userName)
issue.setAssignee(user)
System.out.println("If condition executed")
}
else
{
System.out.println("If condition Not executed")
}

Log Output for positive use case==>

Custom field Value: Production
If condition executed
[DebugMailListener]: Issue: [#101311] test
[DebugMailListener]: Comment: null
[DebugMailListener]: Change Group: null
[DebugMailListener]: EventTypeId: 1
[DebugMailListener]: Time: Tue Apr 28 11:04:19 EDT 2015
[DebugListener]: DebugListener.issueCreated
[DebugListener]: Issue: [#101311] test
[DebugListener]: Comment: null
[DebugListener]: Change Group: null
[DebugListener]: Event Type: Issue Created
[DebugListener]: Time: Tue Apr 28 11:04:19 EDT 2015

Post Function Order==>

PostFunctionOrder.png

User has the Assignable User Permission.

I have been stuck on this for 2 days, can anynone please guide me?

Thanks!!

[Bhupesh Nagda · Accepted solution]

NVM 

I figured it out

[Jason Smith]

What was the solution?

[Jason Smith]

Where I'm at is that this works during a regular transition, but it doesn't work during the create transition.

[Bhupesh Nagda]

Put the script to first spot in the post functions and then try again

[Jason Smith]

That did it, thanks!

[Piotr Zielinski]

Unfortunately, this script post function doesn't work with JIRA 7. After upgrade I received errors like in a screenshot attached.

postfunction_error.png

Anyone that could help me?

[Bhupesh Nagda]

Is there anyone who can hep me on this?