[Solved]Blueprint interface function is not called

[anonymous_user_263e38f4]

hello guys. I am making uv light system with the unreal blueprint communication and stumbling on interface.
this is what I have done so far.

calling interface(flash)

getting event(footprint manager)

and problem is that interface call is not working, nothing is happen.
any help would be awesome.
cheers!

[anonymous_user_263e38f4]

oh I just figured out by my self.
you gotta assign the target to the obj that would actually execute that interface func.

cheers