I tried the plugin. there is a little problem, when the survivor loses in one chapter (restart chapter), the panic event doesn't work anymore (auto calling horde). the same thing happened when winning one chapter and going to the next chapter, the panic event did not work when opening the door of saferoom (auto calling horde).
--> I have tried this on server.cfg:
director_panic_forever 1 and director_panic_forever 0