How do you detect when an ablity is turned off?

I would like to know how you detect when an ability is turned off because of lack of mana (base spell immolation). I know how you detect when it is turned off the regular way, so don't tell me to do a trigger with the event: a unit is issued an order with no target, and the condition: issued order equal to unimmolation.

Any help would be appreciated.:D

Event = Unit stops casting spell

or

Event = Unit finishes casting a spell

Nope, none of them working, maybe you could check when his mana is near 0...

When it's turned off, even automatically, its deactivation order should still be sent. So, assuming you're using immolation, detecting an unimmolation order SHOULD theoretically work.