How do I use the Send Command action to trigger an event on another gameobject?
Oh, I see... my mistake. I was referring to the Send Command action in the last paragraph. Editing now.
Isn't the On Demand program executing when the Command is sent to the instance of Trigger stored in <other> at runtime? I'd suggest you adding some Log Message actions or adding some breakpoints (click on the outer left side of any action) to debug the problem.