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> Programmatically firing a LATCHED BOOLEAN IN AN EVENT STRUCTURE is possible after all, I found out here .
I filed CAR 588538 to fix that. It should not be possible... the event behavior is undefined (which is why you can't do it by any other path). I doubt anyone thought to test the Type Cast hack. It'll be easy to add a mechanical action check at the actual property value assignment and then return an error in that case.