Call function in streamed level from Parent

I’ve had a look around and I’ve seen people say to use Get Streaming Level, then cast that to my level. When I use this though it only brings up Cast To LevelStreamingKismet which doesnt appear to be useful.

I basically have a matinee I want to play when the streamed level loads, but attaching it to Event BeginPlay doesnt work.

Any pointers would be greatly appreciated!