My action did absolutely nothing. I'm a super powerful D&D sorcerer who has forgotten which spells he can use. And wants to be president. So I've got to make a lot of guesses. I'll know if one works, but you guys won't necessarily know.
For example, a spell in D&D has a combination of verbal components, gestures, etc as well as different effects. So I'll know for sure if it worked or not.
I do not know Zone of Truth and it did nothing. But Orange's reaction is very telling.