is there anyway to a trigger event trick
you can start with tick disabled and then enable tick with another event if that what you mean. tick when setup like in the image above should trigger every frame rendered. its worth noting that tick is mainly used for applying physics forces, actors movement or things that change rendering per frame. tick should be used very sparingly. in most cases there is a more context driven solution to updating things.
could you give me a screenshot of blueprints ?
i have animated blood decal but i want to trigger