Server Custom cars Help



So I’m retextureing some cars for my FiveM server and possibly to here. But I’m stuck, I’m trying to be able to change my license plate on my cars through my vMenu trainer it changes on the Hud to what I want it to say, but does not change on the car, I’ve removed the original guys plate and tried that didn’t work, then I tried to do my own and didn’t work tried his and didn’t work. Please help I’m new to textureing and modding.