How do I separate my Ai from using my version of Dynamic Material

I have a thruster that changes intensity when I pull the game pad trigger, I do this using a material instance parameter. however the multiple Ai also use the same mesh and materials. so when I pull the trigger everyones thruster lights up in unison. I dont really know how to generate seperate instances of the material so that each ai’s thruster will only light up when they pull their individual trigger.