Unanswered question: making friendly races un?

[lexicat]

Hi there,

Oh, I am not trying to make a friendly race unfriendly during an encounter, I am trying (and failing) to make that race (wherever encountered), hostile afterward in future encounters. To make up an example, a quest involves the player straying unto and accidentally defiling the sacred Zorg burial planet. Thereafter, the Zorg are hostile to the player. (until and unless they are made friendly through some other quest or item, like an encounter while accompanied by a Zorg escort, or using the Mantle of Babulon)

So:
Player visits planet and triggers quest
Arbitrary race's stance is set to hostile (i.e. future encounters will be hostile)
Profit! (ha ha)

Except that "ENMY zorg" doesn't seem to do this. How do I do this?

Thanks for checking in, Fingers!

Lexicat