I'm creating an item that has several bonus magic effects, but I also want to drain health, magicka and stamina as side effects. I've got the first part working, but I can't get the draining part working.

I saw this thread: http://www.gamesas.com/topic/1346322-constant-effect-that-drains-magicka/ but that doesn't seem to work for my enchantment. Mimicking "mortal wound" I've added AbDamageHealthConstant to my enchantment with a magnitude of 10.0 and it doesn't work (I assume that the mortal wound ability works, but I haven't tested it).

The best I've been able to achieve is to add a detriment magic effect that stops magicka, stamina and health regen by using the HealthRate, MagickaRate and StaminaRate. But this doesn't "drain" it just stops the regen. I've used magnitudes of thousands to verify this.

How do I get this "drain" concept working in an enchantment?