Sequencing an emissive material along blueprint instances

Dear community,

I am a newbie to UE4 and I need your help. I am not a programmer so I hope to achieve this using blueprints only

I am trying to use a mesh asset which has been converted into a blueprint actor, to create a chase light effect between the actor-instances.

I set up the emissive material to loop the light on/off, but right now all actors turn on/off at the same time.
Can I sequence the animation in delay between the actor instances without duplicating the material and still using the same single blueprint ?

I somehow can’t upload images here so here are the screenshots via dropbox:
Scene: Dropbox - Scene.jpg - Simplify your life
Blueprint of the emissive material: Dropbox - BluePrint.jpg - Simplify your life

Thank you very much in advance

Elad.