Camera Collision-Trigger Volume

Hi all.
I’m using a set view Target with blend to move about a scene on the click of buttons built using UE4’s UMG.
Nothing complicated there.
The problem is I want to activate trigger volume- OnactorbeginOverlap etc but when I blend to new camera position which the Trigger Volume surrounds I get nothing.

I’m only using a player start- While this activates a trigger at the start it does not move with the blend ?

question is what is my best option to activate a trigger when camera X moves into the trigger volume.