Help please >.<

[Daemian]

You edit misc/main_sanity_events.cfg
Then you call your custom insanity event with StartRandomInsanityEvent();

Being that it's at random which Insanity Event is called, you wanna disable all the others first.
SetInsanitySetEnabled( asInsanitySet, true/false );

So, basically if you have your custom insanity event and it's set name is "Frost" (it uses sets, not specific names)
You gotta use SetInsanitySetEnabled(set, false) on every other set in the file before you call StartRandomInsanityEvent();

It's supposed to work %100 but still there's a weird chance, like %15 of the time, your StartRandomInsanityEvent call gets ignored. As if the game decided that none of the insanity events are gonna play.

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More info

Here's the guide dnAlange did once.
I didn't read it, but we talked many times and tried many methods and still the function fails time to time.