Why is Dynamic Material Instance not working :(?

I have a Warping affect made by a material’s absolute world position and i need to change a 4 values vector in order to operate it correctly

I applied the affect to 2 materials that I use in my particle emitter,this emitter i spawn trough: spawn emitter attached

I need that emitters material instances to change that 4 value vector according to the values I give it during the game session so i came to the conclusion that i need an MID(Material instance dynamic)

and I am having a hard time making it work so i need your guys help :slight_smile: