How to add multiple projects validation in simple script runner?

[Tayyab Bashir]

Hi,
In one of my workflow transitions I am adding a simple script runner validator.
I am trying to validate it for project ABC, DEF, and XYZ.

For a single project I am doing the validation as,

issue.getProjectObject()?.key != "ABC" // works fine.

But I can't seem to add multiple projects in it. 

- issue.getProjectObject()?.key != ["ABC", "DEF"] // NOT Working
- issue.getProjectObject()?.key != "ABC" || "DEF" // NOT Working

How can I achieve this ? 
Many thanks in advance 

[JamieA · Accepted solution]

! (issue.projectObject.key in ["ABC", "DEF"])

[Chander Korshika]

It Works..thank you @JamieA 

[Nic Brough -Adaptavist-]

You're using != (does not equal) incorrectly.  You need a "contains" rather than an equivalence.  If it were plain java, I'd say something like

String projectlist = "ABC DEF"

String project = issue.getProjectObject().key

If projectlist.containts (project) ...