1. open the client in jpexs
2. navigate to scripts>com>company>assembleegameclient>objects
3. open ObjectProperties
4. find hasOwnProperty("Player")
5. click on "Player"
6. on the right pushtring Player should appear
7. edit the Player to anything you want, if you put Enemy then enemies will attack each other
Credits to ~V~, his tutorial is here: https://www.mpgh.net/forum/showthread.php?t=1110900