Trying to Show Boss Health from Trigger

I am trying to get a Health bar for a boss to display after overlapping a trigger but when I try to use an Interface to message the Boss BP to display the UI Nothing happens. How can I fix this?

I need more context. In your second picture, what/where is that? Is that an AI Controller? In your first picture you are referencing an AI Controller to call End Dialogue. Interfaces will attempt to call but if you call it on something that doesn’t implement that interface, nothing will happen.

I assume by looking that EndDialogue from your second picture does not ever fire. You can confirm this by adding a print string directly after exec.

Hi, can you add print string to the event_endDialogue event and see if its firing or not in first place?