Starting Material flipbook node from Frame 1

Hi all,
I’m trying to spawn an explosion effect in from frame one, and kill it on the final frame. I have a separate blueprint with a plane (material is attached) and a light that comes in with the explosion on a timeline. The material attached to the plane has a flipbook node attached and this appears to be looping in the background constantly. I have managed to spawn the blueprint in on a button press, but it will spawn in at a random frame every time. Is my problem the time node input? How would I go about setting this up?